Retired from the French service as a major in the Nassau regiment of infantry (1760). Signed himself as a colonel of cavalry.
Sought Franklin’s help in some genealogical inquiries (1778).
Requested that Franklin forward his letters to General Daniel Roberdeau, member of the American Congress, whom he suspected was his long-lost cousin (1779).
Requested a letter of recommendation from Franklin for his son who wished to go to America to serve with Daniel Roberdeau (1780).
Born in Haguenau.