"The coffin was borne to a cemetery, where it was buried beside his wife's, in earth that he had brought from America. The cemetery, a churchyard at 35, rue de Picpus in a mixed commercial and residential district southeast of the center of Paris, is mentioned in the Michelin Green Guide to the French capital. The Lafayetes' graves are not."
The above is from page 3 of, "GENERAL and MDAME de LAFAYETTE - Partners in Liberty's Cause in the American and French Revolutions" by Jason Lane.
This is a damn good piece of work, y'all.