[2][5] De Barth was aided by Thomas Jefferson,[6] George Washington,[5] and Alexander Hamilton,[7] the first two hoping to sell their Ohio Valley lands to the Frenchman.
De Barth showed his appreciation with gifts to Jefferson from France and the American frontier, including a French art book,[8] buffalo skin, and rather mysterious "tooth of a carnivorous elephant.
Walbach, the oldest officer to ever serve in the U.S. Army, had in his long career commanded most American eastern seacoast forts and became adjutant general of the United States.
A daughter, Marie-Antoinette de Barth, became Mother Edmond-Paul, Abbotess of the Cistercian nuns of Notre-Dame-de-la-Misericorde at Koenigsbruck Abbey in the Forest of Haguenau.
[12] In 1795, the Alsatian home that the de Barth family fled to escape the guillotine was purchased by industrialist Andre Hartmann, and later was the beginning of the beautiful Albert Schweitzer Park.