J. M.with his respects to Mr. S. & informs him, in answer to the enquiry in his letter of the 18th. informs that none of the persons to whom it relates are now living, & that no descendant of either is in the Natl Legislature. The only male descendant now alive is John Mercer the son of Jno. F. Mercer, misnamed it would appear W. Fr. &c by Mr. S. in his letter; and now a resident of the City of Washington