Five Star Royalty Partners Ltd v. Jack Mauldin, Jr ( 2020 )


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  • Case: 19-50860      Document: 00515545983        Page: 1    Date Filed: 08/31/2020
    United States Court of Appeals
    for the Fifth Circuit                                   United States Court of Appeals
    Fifth Circuit
    FILED
    August 31, 2020
    No. 19-50860
    Lyle W. Cayce
    Clerk
    Five Star Royalty Partners, Limited,
    Plaintiff—Appellee,
    versus
    Jack Mauldin, Jr., Individually and in his capacity
    as Trustee of the Charles W. Welch Irrevocable Trust;
    Timothy L. Welch, Individually and as
    Trustee of the Timothy L. Welch and Vicky L. Welch Revocable Living Trust;
    CK Bird Minerals, L.P.;
    Kathryn B. Bird, as Trustee of the Kathryn B. Bird Revocable Trust,
    Defendants—Appellants.
    Appeals from the United States District Court
    for the Western District of Texas
    USDC No. 6:16-CV-465
    Before Smith, Willett, and Duncan, Circuit Judges.
    Jerry E. Smith, Circuit Judge:
    Defendants appeal a summary judgment favoring Five Star Royalty
    Partners, Limited (“Five Star”), which had sought to quiet title over certain
    oil-and-gas interests. The district court declared that Five Star “own[s] an
    undivided three-eighths (3�8) mineral interest pursuant to [a] May 5, 1927
    deed.” We affirm, though we clarify that said mineral interest consists solely
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    of the right to receive a proportionate share of royalties and does not include
    any executive right or right to develop the land.
    I.
    This case concerns the interpretation of a May 5, 1927, deed (the
    “Deed”) purporting to convey a “royalty interest” and an “equivalent re-
    versionary interest in and to all oil, gas, casinghead gas, and other minerals,
    in and under” certain sections of land. That Deed reads in relevant part as
    follows:
    [Grantor conveys to grantee] a royalty interest of three-eighths
    ( ) of all . . . minerals, hereafter produced and saved from,
    3�
    8
    together with an equivalent reversionary interest in and to all . . .
    minerals, in and under the [relevant lands] . . . .
    [That] land being now under an oil and gas lease . . . . It is
    understood and agreed that this sale is made subject to the
    terms and conditions of said lease and the royalty interest hereby
    conveyed is a three-eighths (3�8) part of the royalty provided by said
    lease to be paid, but the royalty interest hereby conveyed shall
    be a covenant running with said land in perpetuity and shall be
    provided for in any future lease or sale of the . . . minerals in, on
    and under the [relevant] land.
    It is understood that the three-eighths of one-eighth interest
    herein conveyed is a royalty interest only, and the grantee by
    reason of the possible reversionary interest in the . . . minerals
    in and under said land shall have no interest in any rentals,
    bonuses or other revenues or moneys other than royalties re-
    ceived or derived from the lease or sale of said land, and neither
    the grantee nor its successors or assigns shall have any control
    over the lease or sale of said lands for minerals or other pur-
    poses, and for the purpose of leasing, selling or making other
    contracts for the development and production of the minerals
    in said lands, the original grantors are expressly made the
    agents of the grantee, and it shall not be necessary to consult
    the grantee in any way with respect thereto; but in case . . .
    2
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    minerals shall at any time hereafter be produced from said
    lands, then and in that event the grantee shall receive a three-
    eighths of one-eighth of the same so produced and saved, as royalty,
    which shall be delivered to the grantee, its successors, and
    assigns. [Emphases added.]
    Five Star, asserting itself as the grantee’s successor-in-interest,
    sought a declaration that it owns a “floating” royalty entitling it to a 3�8 share
    of any leased royalty. The defendants each counterclaimed that Five Star
    owns a fixed royalty interest consisting of a 3�8 of 1�8 (i.e., 3�64) share of gross
    production. The district court granted Five Star’s motion for summary judg-
    ment and denied defendants’ equivalent motions.
    Seeking to establish chain of title to the interest conveyed in the Deed,
    Five Star had submitted various property records. The latest conveyance in
    that chain described the interest obtained by Five Star as “ROYALTY
    ONLY.” After summary judgment, Five Star moved to supplement the
    record with “newly-available evidence,” including a recent quitclaim exe-
    cuted by the successor to the entity that had transferred the “ROYALTY
    ONLY” interest to Five Star. The district court granted that motion while
    simultaneously denying defendants’ motion to modify the judgment. Defen-
    dants appeal.
    II.
    “This court reviews summary judgment de novo, applying the same
    legal standards as the district court. Summary judgment is appropriate if the
    movant shows that there is no genuine dispute as to any material fact and the
    movant is entitled to judgment as a matter of law.” Ryder v. Union Pac. R.R.
    Co., 
    945 F.3d 194
    , 199 (5th Cir. 2019) (cleaned up). “We can affirm the . . .
    summary judgment on any ground supported by the record.” Smith v. Reg’l
    Transit Auth., 
    827 F.3d 412
    , 417 (5th Cir. 2016).
    3
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    “When, as in this case, subject matter jurisdiction is based on diver-
    sity, federal courts apply the substantive law of the forum state. For guid-
    ance, we turn first to [Texas’s] highest court and otherwise look to its inter-
    mediate courts to determine how the highest court should likely rule.”
    
    Ryder, 945 F.3d at 199
    (cleaned up).
    A.
    A suit to quiet title “enable[s] the holder of the feeblest equity to
    remove from his way to legal title any unlawful hindrance having the appear-
    ance of [a] better right.” Bell v. Ott, 
    606 S.W.2d 942
    , 952 (Tex. App.—Waco
    1980, writ ref’d n.r.e.) (quoting Thomson v. Locke, 
    1 S.W. 112
    , 115 (Tex.
    1886)). “[T]he plaintiff must prove, as a matter of law, right, title, or own-
    ership in himself with sufficient certainty to enable the court to see that he
    has a right of ownership and that the alleged adverse claim is a cloud on the
    title that equity will remove.” Hahn v. Love, 
    321 S.W.3d 517
    , 531 (Tex.
    App.—Houston [1st Dist.] 2009, pet. denied).
    Five Star submitted a chain of title purporting to demonstrate an own-
    ership interest in the land. The legitimacy or continuity of that chain is un-
    disputed, as is the existence of defendants’ competing claim. We agree with
    the district court’s finding such uncontested proof enough, “as a matter of
    law, . . . [to establish] ownership in [Five Star] with sufficient certainty to
    enable the court to see that [Five Star] has a right of ownership” before
    determining whether defendants’ “claim is a cloud on the title that equity
    will remove.”
    Id. The defendants’ contrary
    suggestion—that Five Star has not estab-
    lished ownership because one conveyance in its chain of title purports to
    transfer a “ROYALTY ONLY”—is unpersuasive. Even accepting that Five
    Star holds solely a “royalty,” that would affect the nature of Five Star’s own-
    ership interest and not its existence. Five Star’s interest, shown throughout
    4
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    the chain of title, undisputedly includes some kind of “royalty” as first
    conveyed in 1927. Defining that “royalty” is the core question and is sepa-
    rate from the issue of ownership. 1
    B.
    “The construction of an unambiguous 2 deed is a question of law for
    the court. The primary duty of a court when construing such a deed is to
    ascertain the intent of the parties from all of the language in the deed by a
    fundamental rule of construction known as the ‘four corners’ rule.” Luckel
    v. White, 
    819 S.W.2d 459
    , 461 (Tex. 1991) (citation omitted). That rule
    “favor[s] a holistic and harmonizing approach and reject[s] mechanical rules
    of construction, such as giving priority to certain types of clauses over others
    or requiring the use of magic words.” Hysaw v. Dawkins, 
    483 S.W.3d 1
    , 8
    (Tex. 2016). Indeed, “[n]o single provision taken alone will be given control-
    ling effect; rather, all the provisions must be considered with reference to the
    whole instrument.”           Seagull Energy E&P, Inc. v. Eland Energy, Inc.,
    
    207 S.W.3d 342
    , 345 (Tex. 2006).
    “In this case, questions of [contractual] intent arise due, in part, to the
    use of double fractions,” to “the prevalence of 1�8 as the standard royalty at
    the time” of the Deed’s execution, and to the subtle, though important, dis-
    tinction between a “royalty interest” as a constituent element of a mineral
    interest and a “royalty interest” consisting of a fixed factor of gross produc-
    tion. 
    Hysaw, 483 S.W.3d at 8
    . We consider, first, the kind of royalty the Deed
    conveyed, before turning to the amount thereof.
    1
    To be sure, the “ROYALTY ONLY” language might have been relevant if we
    agreed with the district court’s finding that the 1927 Deed conveyed to its grantee not only
    royalty rights but also executive and development rights. See infra section II.B.2.
    2
    No party contends that the Deed is ambiguous.
    5
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    1.
    “The word ‘royalty’ has a well understood meaning in the oil and gas
    industry.” Watkins v. Slaughter, 
    189 S.W.2d 699
    , 700 (Tex. 1945). Never-
    theless, this case requires distinguishing between two kinds of “royalty”
    interests: (1) a “mineral interest” that includes a right to receive a propor-
    tionate share of reserved royalties and (2) a free “royalty interest” granting
    a right to a fixed fraction of gross production.
    “A mineral estate consists of five interests: 1) the right to develop,
    2) the right to lease, 3) the right to receive bonus payments, 4) the right to
    receive delay rentals, and 5) the right to receive royalty payments.” French
    v. Chevron U.S.A. Inc., 
    896 S.W.2d 795
    , 797 (Tex. 1995). It is possible to
    convey (by express intention) solely the royalty interest while reserving or
    excepting the others; the grantee would nevertheless hold a “mineral
    interest”—“a mineral interest stripped of appurtenant rights other than the
    right to receive royalties.”
    Id. at 798.
    Such an interest is “subject to being
    leased,” entitling the interest-holder to his portion “of the royalty reserved
    in the instrument leasing the mineral interests.” Delta Drilling Co. v. Sim-
    mons, 
    338 S.W.2d 143
    , 146 (Tex. 1960). 3 “In other words, when a deed con-
    veys a royalty interest by the mechanism of granting a fractional mineral
    estate followed by reservations, what is conveyed is a fraction of royalty, not
    a fixed fraction of total production royalty.” 
    French, 896 S.W.2d at 798
    .
    A “royalty interest” can also indicate a non-mineral estate interest,
    sometimes referred to as a “non-participatory royalty interest” or an “over-
    riding royalty,” 4 which in any case consists of “an expense-free obligation
    3
    Absent an operating lease, the “royalty interest” due to the interest-holder would
    be his share of the mineral estate, minus production costs. See Cox v. Davison, 
    397 S.W.2d 200
    , 201 (Tex. 1965).
    4
    See Piranha Partners v. Neuhoff, 
    596 S.W.3d 740
    , 742 n.2 (Tex. 2020). Precise
    6
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    (except as to taxes), payable as a specified share of the gross production.”
    
    Delta, 338 S.W.2d at 147
    . 5 Such an interest, the defendants contend, was
    conveyed in the Deed. That contention, if true, would support an inference
    that Five Star, as the grantee’s successor-in-interest, would be owed not a
    portion of royalties reserved to the mineral estate owner but a fixed royalty
    of gross production.
    The district court, however, correctly recognized that the Deed con-
    veyed an interest in the mineral estate. First, the Deed’s “royalty interest”
    (as distinguished from its “equivalent reversionary interest”) itself is a por-
    tion of royalties and not a fixed factor of gross production. The granting
    clause conveys a “royalty interest of three-eighths (3�8) of all . . . minerals”;
    in isolation, that might suggest a 3�8 fixed royalty. See 
    Watkins, 189 S.W.2d at 700
    –01. The Deed’s second paragraph, however, refers to the same inter-
    est as “a three-eighths (3�8) part of the royalty provided by [the then-operative]
    lease,” and in the third paragraph we encounter the “royalty interest” again
    phrased as a “three-eighths of one-eighth interest.” Moreover, the Deed
    neglects to absolve the grantee of production costs. 6 Such language suggests
    that the “royalty interest” is not a fixed royalty but instead is a right to
    receive royalties proportionate to a held mineral interest. 7
    distinctions, if any, among various subgroups of non-mineral estate royalty interests—e.g.,
    “free” or “pure” or “overriding” royalty interests—are not relevant to this case, particu-
    larly given that we find the Deed not to have conveyed any such interest.
    5
    See also KCM Fin. LLC v. Bradshaw, 
    457 S.W.3d 70
    , 75 (Tex. 2015); 8 WILLIAMS
    & MEYERS OIL & GAS LAW 921 (2019 ed.) (noting that “royalty” can be “(1) [t]he
    landowner’s share of production, free of expenses of production [or] (2) [a] share of pro-
    duction, free of expenses of production[.]”).
    6
    Cf.
    id. at 186
    (holding “that a [fixed] royalty interest was reserved” in key part
    because the deed explicitly stated that “the interest retained [would be] free of the costs of
    drilling and production”).
    7
    See Temple-Inland Forest Prods. Corp. v. Henderson Family P’ship, Ltd., 
    958 S.W. 7
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    The Deed’s third paragraph only strengthens that conclusion. Its
    “Reservations Clause” 8 states that “the possible [equivalent] reversionary
    interest” would not transfer any right to lease or develop 9 the land, or to
    receive rentals or bonus payments “other than royalties received or derived
    from the lease or sale of [the] land.” Those “reservation[s] would be redun-
    dant and would serve no purpose whatsoever if the interests in minerals being
    conveyed [were] a [fixed, pure] royalty interest, that is, [a set fraction] of all
    production.” 
    French, 896 S.W.2d at 798
    .
    The defendants would have the foregoing analysis not apply because,
    in their view, the so-called “Reservations Clause” is a list of exceptions and
    not reservations. 10 But even if we refer to the relevant section as the “Excep-
    tions Clause,” we cannot conceive of a single reason—and defendants have
    not attempted to provide any—why the Texas Supreme Court’s analysis of
    “when a deed conveys a royalty interest by the mechanism of granting a frac-
    tional mineral estate followed by reservations” might apply any differently
    should said “mechanism . . . [be] followed by” exceptions. 
    French, 896 S.W.2d at 798
    (emphasis added). 11 It is of no immediate concern who is to be enjoying
    2d 183, 185 (Tex. 1997) (“The owner of 50 royalty acres out of a 32,808.5 acre tract is
    entitled to receive 50�32,808.5 of royalty, not a 50�32,808.5 fixed royalty.”).
    8
    For continuity’s sake, we, like the district court, refer to the two broad sections
    within the Deed’s third paragraph as the “Reservations Clause” (ending at “but in case”)
    and the “Future Production Clause.”
    9
    See infra note 14.
    10
    See Pich v. Lankford, 
    302 S.W.2d 645
    , 650 (Tex. 1957) (“The primary distinction
    between a reservation and exception is that a reservation must always be in favor of and for
    the benefit of the grantor, whereas, an exception is a mere exclusion from the grant, in favor
    of the grantor only to the extent that such interest as is excepted may then be vested in the
    grantor and not outstanding in another.”) (emphasis omitted).
    11
    See also 
    Pich, 302 S.W.2d at 650
    (citation omitted) (stating that, although “[t]he
    words ‘exception’ and ‘reservation’ are not strictly synonymous, [ ] they are often used
    interchangeably”).
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    the interests excluded; whether by “reservations” or by “exceptions,” it is
    enough that the Deed expressly states that the specified interests shall not be
    the grantee’s.
    The Deed conveyed two interests that were “equivalent[ly]” the
    same right to receive a share of royalties commensurate with a mineral inter-
    est. As the lands were under an operating lease at the time of the conveyance,
    the grantee would gain a fraction of the grantor’s right to receive royalties
    reserved in that lease. That interest would carry a “possibility of reverter,”
    under which “[t]he royalty rights [ ] may revert [to the grantor], as part of
    the total mineral estate that may revert” upon termination of the lease.
    
    Luckel, 819 S.W.2d at 464
    . But the Deed foreclosed that possibility by speci-
    fying that the interest would “be a covenant running with [the] land in per-
    petuity and [would] be provided for in any future lease or sale”; for his “pos-
    sible reversionary interest,” the grantee’s right to receive a fractional royalty
    would revert to the grantee himself. Given that the relevant operating lease
    did terminate, the “royalty interest” reverted to the grantee, who now owns
    a single “interest in the nature of a royalty—a mineral interest stripped of
    appurtenant rights other than the right to receive royalties.”           
    French, 896 S.W.2d at 798
    .
    2.
    Despite observing the dichotomy between the Reservations Clause
    (and its withholding of rights) and the Future Production Clause (and its
    granting of rights), the district court neglected to consider such when dispen-
    sing with the executive right. The court found that “the Deed, by appointing
    the original grantor as the agent of the grantee for purposes of exercising the
    executive right, acknowledges that that right is not reserved to the grantor
    but remains instead as a constituent attribute of the grantee’s mineral inter-
    est.” Thus, the court accepted Five Star’s proffered argument that “the
    9
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    [D]eed does not deprive the Grantee of the executive right and right to de-
    velop associated with the reversionary mineral interest it conveyed. It simply
    provides that the Grantor will exercise those rights through an agent specified
    in the [D]eed.”
    We disagree. First, the Deed’s naming the grantor as “the agent[] of
    the grantee” when “leasing, selling, or making other contracts for [ ] devel-
    opment and production” is squarely within the Reservations Clause, which,
    as the district court acknowledged, concerns rights not conveyed. That alone
    suggests the “agent” language would not transfer the executive right but,
    instead, would qualify how the grantor may exercise the right otherwise with-
    held to himself.
    Bolstering that conclusion is the internal inconsistency that would
    arise from the district court’s reading. A principal-agent relationship, today
    as in 1927, requires the former to enjoy at least some control over the latter.12
    Although the Deed does refer to the grantor as the grantee’s “agent[]” in
    exercising the executive right, in the same breath—bookending the “agent”
    language—it declares that the grantee would lack “any control over the lease
    or sale of [the] lands” and that it would “not be necessary [for the grantor]
    to consult the grantee in any way with respect thereto.” Not only is it unlikely
    that a conveyance of a mineral interest would be found within the Reser-
    12
    See Gen. Bldg. Contractors Ass’n, Inc. v. Pennsylvania, 
    458 U.S. 375
    , 392 (1982)
    (“Agency is the fiduciary relation which results from the manifestation of consent by one
    person to another that the other shall act on his behalf and subject to his control, and consent
    by the other so to act.”) (emphasis added) (quoting Restatement (Second) of
    Agency § 1 (Am. Law Inst. 1958)); Hunter v. Adoue & Lobit, 
    86 S.W. 622
    , 624 (Tex.
    1905) (“The agent’s right is, of course, subordinate to and liable to the control of the prin-
    cipal to the extent of his interest.”); see also Warren A. Seavey, The Rationale of Agency,
    29 YALE L.J. 859, 863 (1920) (“The agent’s duty of obedience flows directly from the
    control which the cases recognize to be at all times in the principal.”).
    10
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    vations Clause; under its own terms, the grantor, by definition, could not truly
    be the grantee’s “agent.”
    That the prospective royalty owner should insist on some sort of fidu-
    ciary standard governing the executive is explained by the state of the law at
    the time. As late as 1948—a full twenty years after the Deed’s execution—
    Texas law had “not yet developed to the point where a clear concept of the
    exact nature of the relation and duties [between the royalty owner and the
    exclusive-lessor could] be ascertained,” so that a “royalty owner [would] not
    be fully protected if he must rely entirely upon the ordinary principles of con-
    tract law.” Lee Jones, Jr., Non-Participating Royalty, 26 TEX. L. REV. 569,
    573–74 (1948). Indeed, “[a] royalty owner has no power to lease or use the
    surface, or to interfere with the land owner in any way. It might be, or it might
    not be true that the courts [as of 1946] would raise an implied obligation in
    his favor, requiring the land owner to lease the land under certain circum-
    stances . . . .” Moore v. City of Beaumont, 
    195 S.W.2d 968
    , 980 (Tex. Civ.
    App.—Beaumont 1946), aff’d, 
    202 S.W.2d 448
    (Tex. 1947). For the Deed’s
    grantee, however, there would be no potential need to determine the exis-
    tence of any such “implied obligation” because that obligation was made
    express by the “agent” proviso. 13
    That proviso is thus a limitation on the Deed’s reserving the executive
    right with the grantor: The grantor would retain the executive right (and the
    right to develop 14), but “a fiduciary standard of conduct will be required on
    13
    Cf. Hager v. Stakes, 
    294 S.W. 835
    , 837 (Tex. 1927) (noting a conveyance in which
    it was expressly agreed that “no obligation is imposed . . . to drill or operate for oil . . . but
    that [the royalty owner] shall have [his] part of such petroleum only if and when
    produced”).
    14
    On its face, “the deed was silent as to the conveyance of the right to develop,”
    but “the right to develop is a correlative right and passes with the executive rights [i.e., the
    right to enter leases for sale or development of the land].” 
    French, 896 S.W.2d at 797
    n.1.
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    the theory that [something akin to] the relation of principal and agent or
    trustee and cestui que trust exists.” 15 The grantee, though receiving solely the
    right to receive proportionate royalties, may be assured that the estate would
    be developed, leased, and utilized in good faith toward his interest. 16 That
    interest, however, remains solely a right to receive royalties as a partial min-
    eral interest-holder.
    C.
    Having determined the nature of Five Star’s interest, we consider its
    quantum. The source of contention is that the Deed’s paragraphs appear to
    contradict one another. Its first paragraph purports to convey “a royalty
    interest of three-eighths (3�8) . . . together with an equivalent reversionary
    interest.” Its second paragraph, however, states that “the royalty interest
    hereby conveyed is a three-eighths (3�8) part of the royalty provided by the
    [operative] lease” and that the same “interest . . . shall be provided for in any
    future lease or sale.” Further compounding the discrepancy, the third para-
    graph refers to that interest as a “three-eighths of one-eighth interest,” and it
    declares that “in case . . . minerals shall at any time hereafter be produced
    Therefore, the Deed’s expressly disclaiming to convey “any control over the lease or sale
    of [the] lands for minerals or other purposes,” effectively reserved “the right to develop
    . . . in the grantor.”
    Id. 15
                 
    Jones, supra, at 573
    . In more recent years, Texas courts have found that “a fidu-
    ciary relationship [does] exist[] between an owner of the executive rights and [a] non-
    participating royalty owner[].” 
    KCM, 457 S.W.3d at 80
    . That duty is distinct from “a
    more paradigmatic fiduciary relationship, like principal and agent,” as the executive need
    not “grant priority to the non-executive’s interest,” though he must nevertheless “acquire
    every benefit for the non-executive that [he] would acquire for himself.”
    Id. at 81
    (quo-
    tation marks omitted).
    16
    Given that the 1927 Deed granted solely a “right to receive royalties,” 
    French, 896 S.W.2d at 798
    , it is of no consequence that a subsequent conveyance in Five Star’s
    chain of title purported to transfer a “ROYALTY ONLY.” We thus decline to consider
    defendants’ argument relating to Five Star’s submission of the post-judgment quitclaim.
    12
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    from [the relevant] lands, then . . . the grantee shall receive a three-eighths of
    one-eighth of the same so produced and saved, as royalty.”
    The defendants suggest that the double fraction be read literally to
    convey, effectively, a 3�64 interest in gross production. Five Star submits that
    the fraction “one-eighth” in context is but a proxy for whatever be provided
    in a lease so that “three-eighths of one-eighth” is synonymous with a right to
    receive royalty proportionate to a 3�8 mineral interest.
    Texas is no stranger to such controversies. In one case, the deed—
    executed in 1921—began by granting “an undivided one sixty-fourth interest
    in and to all . . . minerals in and under, and that may be produced from the
    . . . land.” Garrett v. Dils Co., 
    299 S.W.2d 904
    , 905 (Tex. 1957) (emphasis
    added). And it ended by noting, again, that the grantee would “own[] one-
    eighth of one-eighth of all . . . minerals in and under said lands.”
    Id. (emphasis added). In
    an intervening paragraph, however, the deed stated that the sale
    would “cover[] and include[] one-eighth of all . . . royalty due and to be paid
    under the terms of [the existing] lease,” which itself “provided for a one-
    eighth royalty.”
    Id. (emphasis added). The
    Texas Supreme Court held that the deed, notwithstanding its lan-
    guage of “one sixty-fourth” and “one-eighth of one-eighth,” granted a right
    to receive 1�8 of royalties reserved under future leases:
    As pointed out above, there was granted one sixty-fourth of the
    minerals which the parties construed to mean one-eighth of the
    one-eighth royalty under the then existing lease. The provision
    for ownership of the minerals under future leases is that the
    grantee shall own ‘one-eighth of one-eighth’ of the minerals.
    Had that fraction been expressed as one sixty-fourth, it should
    be given the same meaning as in the granting clause which the
    parties understood and agreed to be a one sixty-fourth royalty
    or one-eighth of the one-eighth royalty. Instead of employing
    the fraction one sixty-fourth in defining the ownership under a
    13
    Case: 19-50860          Document: 00515545983               Page: 14       Date Filed: 08/31/2020
    No. 19-50860
    subsequent lease, the provision is for one-eighth of one-eighth.
    Clearly, that does not denote a less interest than a one sixty-
    fourth, but on the contrary it emphasizes the fact that the in-
    tention was to convey one-eighth of the royalty under future
    leases the same as under the original lease. The court takes
    judicial knowledge of the fact that the usual royalty provided in
    mineral leases is one-eighth. The parties doubtless assumed
    that the royalty under future leases would be one-eighth, as it
    was under the lease in existence when the deed was executed.
    Id. at 906–07;
    see also 
    Hysaw, 483 S.W.3d at 10
    n.11.
    The correct resolution of this case becomes apparent. The Deed pur-
    ports to grant a “royalty interest of three-eighths” in the minerals, combined
    with “an equivalent reversionary interest.” The grantee would thus be enti-
    tled to “three-eighths (3�8) part of the royalty provided by [the then-opera-
    tive] lease”—3�8 of      1�
    8. But should that lease terminate (which it did), the
    grantee’s interest by reverter would “be provided for in any future lease or
    sale,” i.e., he would be owed “a three-eighths (3�8) part of the royalty . . .
    provided for in any future lease or sale.” That interest, though an interest in
    the mineral estate, would be of the estate’s “royalty interest only”; all other
    interests 17 would remain with the grantor, who may exercise them as he
    wishes, provided he does not violate his fiduciary duty (akin to, though not
    precisely that of an “agent[]”) toward the grantee’s interest. “Instead of
    employing the fraction [three] sixty-fourth[s] in defining the ownership
    under a subsequent lease, the provision [in the third paragraph] is for [three]-
    eighth[s] of one-eighth. Clearly, that does not denote a less interest than
    [three] sixty-fourth[s], but on the contrary it emphasizes the fact that the
    17
    That is, “1) the right to develop, 2) the right to lease, 3) the right to receive bonus
    payments, [and] 4) the right to receive delay rentals.” 
    French, 896 S.W.2d at 797
    .
    14
    Case: 19-50860      Document: 00515545983          Page: 15      Date Filed: 08/31/2020
    No. 19-50860
    intention was to convey [three]-eighth[s] of the royalty under future leases
    the same as under the original lease.” 
    Garrett, 299 S.W.2d at 907
    .
    It is true that, taken alone, “the double-fraction royalty . . . [might be
    read] as a mathematical expression describing a [single] fractional royalty;
    under such a reading, any excess royalty would default to the fee owner.”
    
    Hysaw, 483 S.W.3d at 15
    . But “our objective is to effectuate the parties’
    intent as expressed within the four corners of the conveying instrument,”
    and that is accomplished through “careful and detailed examination of the
    document in its entirety, rather than by application of mechanical rules of
    construction that offer certainty at the expense of effectuating intent.”
    Id. at 16.
    Such an inquiry reveals that the parties intended to convey a 3�8 interest
    in the mineral estate, reduced to the right solely to receive royalties propor-
    tionate to any applicable lease as represented by the metonym of
    “one-eighth.”
    The judgment is AFFIRMED, but subject to the clarification that
    Five Star’s 3�8 mineral interest includes solely a right to receive proportionate
    royalties.
    15