+--Francis Marion Jackson 
+--David Mabry Jackson  (17 Mar 1876-23 Dec 1951)
|  +--Elizabeth Lewis Thurmond 
Florence Mary Jackson  (21 May 1916-6 Mar 1996)
|        +--John Andrew Gerking  (27 Aug 1764-1815/1817)
|     +--Jonathan Rice Gerking  (17 Dec 1812-12 Jul 1882)
|     |  |  +--William Rice 
|     |  +--Rachael Rice  (26 Feb 1774-ABT 1855)
|  +--Benjamin Franklin Gerking  (2 Sep 1841-30 May 1923)
|  |  |  +--Solomon Myers  (22 Jan 1786-5 May 1861)
|  |  +--Nancy Ann Myers  (11 Apr 1818-9 Jun 1910)
|  |     |  +--David Stewart 
|  |     +--Mary (Polly) Stewart  (8 Nov 1786-12 Jun 1865)
|  |        +--Henrietta George 
+--Mary Cleveland Gerking  (15 Mar 1885-27 Apr 1949)
   |     +--Meshack Willis 
   |  +--John Austin Willis  (5 Nov 1814-10 Apr 1862)
   |  |  +--Nancy Pritchett 
   +--Artimisia (Mittie) Willis  (17 Mar 1847-17 Mar 1927)
      |  +--Mannen Duren 
      +--Martha O Duren  (19 Dec 1817-12 Sep 1892)
         +--Margaret Gibb