Josiah's Marriage

     Josiah Davisson married Sarah Todd on May 11, 1819 by Robert Armstrong--(Marriage Record Volume A Page 84).   Sarah Todd was the daughter of James and Sarah Jane "Jennie" (Buchanan) Todd.  She was born about 1799 near Nashville in Davidson Co., TN.   Her father, James, was born 1749 in Ireland.  He came to Lancaster Co., PA about 1764.  It's thought that he met the Buchanan family there and followed them to South Carolina, on to Kentucky and then to the Nashville, Tennessee area in 1779.   James married Jane (or Jennie) Buchanan and all their children were born near Nashville.  Sarah was the youngest of their children being born about 1799.  The Todd family moved to Xenia, Ohio about 1805. Was Josiah Davisson a relative of Dr. Andrew W. Davisson, who married Sarah's older sister, Rebecca Todd in 1807?