+--Archibald Clendennin 
      +--William Clendennin 
   +--Robert Clendennin  (1743-30 NOV 1818)
   |  |  +--John Morison  (1628-16 FEB 1736)
   |  +--Hannah Morison  (1716-7 JAN 1802)
   |     +--Jeanette Steele 
+--Benjamin Clendennin  (7 JUN 1784-20 JUN 1863)
|  +--Elizabeth Humphrey  (1752-11 DEC 1806)
John B. Clendennin  (25 MAY 1820-)
+--Sarah Humphrey  (-3 JUL 1853)