+--Leonidas Worthy Thrall  (21 Feb 1850-1918)
+--Charles Haven Thrall  (20 Oct 1883-Jan 1968)
|  +--Edith M Flint 
Robert Mcdowell Thrall  (12 Sep 1914-11 Apr 2006)
|           +--John Andrew Gerking  (27 Aug 1764-1815/1817)
|        +--John Andrew Gerking  (14 Apr 1798-18 Aug 1879)
|        |  |  +--William Rice 
|        |  +--Rachael Rice  (26 Feb 1774-ABT 1855)
|     +--Jonathan Gerking  (7 Feb 1835-)
|     |  +--Mary (Polly) Phillips  (Sep 1801-5 Jan 1855)
|  +--George Washington Gerking  (Sep 1854-27 Jan 1928)
|  |  |  +--William Hoard  (7 Apr 1791-30 Mar 1855)
|  |  +--Mahulda Hord  (30 Oct 1833-23 Dec 1899)
|  |     +--Catharine Blair  (Dec 1795-18 Jun 1888)
+--Gertrude Gerking  (22 Jul 1881-20 Jan 1950)
   |  +--Robert Jones, Dr  (ABT 1829-)
   +--Kate H Jones  (12 Nov 1861-6 May 1931)
      +--Emmaline (Emily) Hammer  (ABT 1833-)