+--Robert Korbitz, Dr 
Eric Korbitz 
|  +--Thomas Ivan Smith  (7 Dec 1896-Nov 1964)
+--Irma Kimberly Smith  (4 Mar 1931-24 Aug 2004)
   |  +--James Mitchell Abbott  (24 Sep 1866-1926)
   +--Irma Mitchell Mae Abbott  (31 Mar 1902-5 Jun 1963)
      |     +--Job Chase  (7 Feb 1792-)
      |  +--James Chase  (16 Feb 1824-23 Mar 1902)
      |  |  +--Rachael English  (1793-)
      +--Irma Chase  (2 May 1868-25 Dec 1945)
         |     +--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)
         +--Sarah Ann Gerking  (20 Jul 1848-29 Mar 1918)
            |  +--John Maple  (1768-ABT Aug 1820)
            +--Sarah Maple  (1 Mar 1810-21 Jul 1893)
               +--Sarah Haws-Hawes