1815 1 April 1815 Dauphin County Deed Book Z Vol 1 Page 579 Jacob & John Detwiler to David Gingrich Jacob & John Detwiler of Derry Township, Dauphin County sold to David Gingrich (same township/county) 45 3/4 acres in the same township. Said tract of land part of land owned by David Detwiler and left to his two sons, Jacob and John.