1824, Charter of Incorporation of the Royal Asiatic Society of Great Britain and Ireland,
[W]e do hereby grant our especial license and authority unto all and every person […] to grant sell alien and convey in mortmain unto and to the use of the said Society and their successors […]
Source: wiktionary
Though in truth it was the law of mortmain […] which originally sent the founders of chantries to seek the king's licence […]
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[…]; and some part of that influence [of the government], which would otherwise have been possessed as in a sort of mortmain and unalienable domain, returned again to the great ocean from whence it arose, […]
Source: wiktionary