James Moore Wayne,
United States v. Kingsley (37 U.S. 476…
“ It remains only for us to say a word concerning the laws and customs of Spain, supposed by the learned judge in the court below, applicable to the confirmation of this claim under the treaty. The fact that no instance is known of land so decreed having reverted to the class of public lands, for the non-performance of the condition, does not prove a custom; unless a current of cases can be shown in which claimants have held the land without performance. Besides, the existence of any such custom is disproved by the decree for the land itself ”
