Most recent case in Texas where Spanish colonial law cited
<p>I understand that some real estate cases in Texas relate to deeds that may have been granted prior to even Mexican independence.</p>
<p>Have there been any such cases and if so when was the last one?</p>

<p>These matters are litigated on a regular basis in Texas with rulings being entered as recently as this month in one such case.</p>
<p>There have been <a href="https://www.tshaonline.org/handbook/entries/mexican-american-land-grant-adjudication" rel="nofollow noreferrer">legislative confirmations of these land grants</a> in Texas as recently as 1965. A <a href="https://scholarship.law.tamu.edu/journal-of-property-law/vol2/iss1/6/" rel="nofollow noreferrer">law review article from 2014</a> reviews this area of law quite comprehensively as of that date (shortly after another relevant statute was passed in Texas which is also discussed <a href="https://www.kens5.com/article/news/investigations/i-team/spanish-land-grant-heirs-fight-for-mineral-rights/273-264091654" rel="nofollow noreferrer">here</a>).</p>
<p>The El Paso Times in <a href="https://www.elpasotimes.com/story/news/2022/02/03/el-paso-tigua-indians-lose-federal-appeal-in-fight-with-city-for-prime-land/9317621002/" rel="nofollow noreferrer">a pay per view story</a> reports on an appeal of a case involving such grants decided on February 3, 2022. The Google search information on the story states:</p>
<blockquote>
<p>El Paso Tigua Indians lose appeal in fight with city for prime
land <a href="https://www.elpasotimes.com" rel="nofollow noreferrer">https://www.elpasotimes.com</a> › story › news › 2022/02/03 Prior to
the Tiguas' lawsuit, city officials planned to have about 30 vacant
... claiming the tribe owns the land under a 270-year-old Spanish land
grant.</p>
</blockquote>
<p><a href="https://www.statesman.com/story/news/2016/09/04/galn-heirs-sue-texas-over-alleged-1870s-seizure-of-spanish-land-grant/10004180007/" rel="nofollow noreferrer">This article</a> concerning a 2015 lawsuit in Texas concerning Spanish land grants also references decisions of the Texas Supreme Court in 2003 and 2008 on the subject. <a href="https://firstsourcemedia.com/2021/10/16/the-texas-spanish-mexican-land-grant-heirs-frauded-by-their-attorneys-cries-of-injustice-2/" rel="nofollow noreferrer">An article from October 21, 2021</a> discusses a case on the subject which had been in litigation for seven years at the time (which may be related to the 2015 lawsuit, it isn't clear to me as I haven't taken the time to dig deep into these cases).</p>
<p>A lawsuit filed in the year 2000 is discussed <a href="https://abcnews.go.com/US/family-texas-island-1759-fights-royalties-promised-paid/story?id=73298516" rel="nofollow noreferrer">here</a>.</p>
<p>Also notable is <em><a href="https://law.justia.com/cases/federal/appellate-courts/F3/37/1478/508460/" rel="nofollow noreferrer">Alliance of Descendants of Texas Land Grants v. United States</a></em>, 37 F.3d 1478 (Fed. Cir. 1994).</p>

real-estate texas spain mexico