In the November 3, 1774, letter from Jacob Mack of Antietam to his paternal uncle, Alexander Mack Jr., of Krefeld (near Chestnut Hill in the Germantown area), Jacob Mack sent his uncle the following greeting: "Also greet warmly for me your dear wife, the dear sister, and all of your children. Greet warmly also the dear cousin Lewis Engelhard and cousin Jacob Schneider, my mother's brother. We also send warm greetings to our old friend, Sister Bayer, and the dear brother George Schreiber and his dear wife." These people all lived in the Germantown area of Pennsylvania at the time. Lewis Engelhard and George Schreiber were well known. They were in charge of the Upper Germantown Burying Ground (aka Ax's Burying Ground) from 1758. Both men died the same year and both were buried in the Upper Germantown Burying Ground (See pages 170-171 from the book GERMANTOWN, MOUNT AIRY, AND CHESTNUT HILL, by S. F. Hotchkin, Philadelphia: Ziegler & Co., 1889.) David, as you well know, the name Schneider is and was pervasive. So was the given name Jacob. There were just too many Jacob Schneiders to keep them all straight. We can be sure, however, that Jacob Mack would have known where his maternal uncle was living in 1774. I think we can safely assume that our Jacob Schneider lived in the Brethren neighborhood of Germantown. Dwayne Wrightsman