+--William A Graven  (18 May 1781-15 Oct 1868)
   +--Austin C Graven  (ABT 1804-1833)
   |  +--Mary (Polly) Spencer  (25 Dec 1781-21 Jan 1851)
+--Thomas Graven  (15 Feb 1832-15 Jan 1879)
|  +--Marcia Ridgeway  (20 Nov 1807-29 Nov 1872)
Thomas Samuel Graven  (6 Oct 1877-8 Nov 1878)
+--Mary Elizabeth Davis  (8 Mar 1835-28 Mar 1896)