retrocede

Perhaps retrocede the “Maryland” part to Maryland.

A better idea would be to retrocede the land to Maryland.

It had been stipulated in the treaty of San Ildefonso in 1800, that Spain should retrocede “the colony or province of Louisiana, with the same extent which it now has in the hands of Spain, and which it had when France possessed it, and such as it ought to be according to the treaties subsequently made between Spain and other powers.”

Retrocede, rē-trō-sēd′, v.t. to go back: to relapse: to retire: to give back.—adj.

The paragraph of cession is as follows: "His Catholic majesty engages to retrocede to the French republic, six months after the full and entire execution of the conditions and stipulations above recited, relative to his royal highness the Duke of Parma, the colony and province of Louisiana, with the same extent that it already has in the hands of Spain, and that it had when France possessed it, and, such as it should be, after the treaties passed subsequently between Spain and other powers."