+--John Andrew Gerking  (27 Aug 1764-1815/1817)
   +--David Peter Gerking  (25 Feb 1799/1800-7 Apr 1860)
   |  |  +--William Rice 
   |  +--Rachael Rice  (26 Feb 1774-ABT 1855)
+--David Samuel Gerking  (14 Sep 1851-13 feb or 16 Mar 1922)
|  |  +--John Maple  (1768-ABT Aug 1820)
|  +--Sarah Maple  (1 Mar 1810-21 Jul 1893)
|     +--Sarah Haws-Hawes 
Elmer Charles Gerking  (25 Mar 1886-15 Oct 1960)
+--Marcia Eleanor Blair  (30 Jun 1858-28 Feb 1914)