+--JOHN HENRY CLAPPER  (ABT 1768-1809)
+--JACOB CLAPPER  (ABT 1789-1865)
|  +--JULIANNA    (-1817)
WILLIAM CLAPPER  (20 May 1823-28 Oct 1886)
|  +--LEWIS KEISTER 
+--EVA SUSANNA KEISTER  (2 Jul 1798-21 Feb 1867)
   +--CATHERINE MARGARETHA