+--John Andrew Gerking  (27 Aug 1764-1815/1817)
      +--James Gerkin  (26 Apr 1802-1867)
      |  |  +--William Rice 
      |  +--Rachael Rice  (26 Feb 1774-ABT 1855)
   +--William R Gerkin  (Jul 1853-BEF 1910)
   |  +--Mary Jane Pullem-Kline-Blaine  (ABT 1822/1825-)
+--Ralph E Gerkin  (Dec 1897-)
|  |  +--Ralph Martindale  (ABT 1813-)
|  +--Lydia M Martindale  (Feb 1852-)
|     +--Delilah Devers  (ABT 1813-)
Betty U Gerkin 
|  +--Ora Cooper  (ABT 1878-)
+--Irma B Cooper  (ABT 1900-)
   +--Effie   (ABT 1882-)