+--Jack O'brien 
Jay O'brien 
|  +--Willard Phillip Carrick  (24 Mar 1865-20 Feb 1933)
+--Harriet Eleanor Carrick 
   |        +--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 
   +--Jessie Sarah Gerking  (23 Dec 1884-19 Feb 1933)
      +--Marcia Eleanor Blair  (30 Jun 1858-28 Feb 1914)