I have a line of Mercer's from this area, but don't have a John W. Mercer. I do have a John Mercer born about 1775 in Pennsylvania and married to an Elizabeth MIller born abour 1775 in New Jersey and the only child I have for them is Mathias born about 1800 in Washington Co., PA. If this could be a line similar to yours please contact me off the email list at my personal email [email protected]_ (mailto:[email protected]) . Life is not measured by the number of breaths we take, but by the moments that take our breath away. Gayle Clemons Newkirk **************Get the Moviefone Toolbar. Showtimes, theaters, movie news & more!(http://pr.atwola.com/promoclk/100000075x1212774565x1200812037/aol?redir=htt p://toolbar.aol.com/moviefone/download.html?ncid=emlcntusdown00000001)