+--Simmons Terwilliger 
Irving Terwilliger  (27 AUG 1850-)
|        +--Samuel Mitchell  (1722-3 MAY 1798)
|     +--Benjamin Mitchell  (9 JAN 1755-24 SEP 1840)
|     |  |     +--John Morison  (1628-16 FEB 1736)
|     |  |  +--John Morison  (1678-14 JUN 1776)
|     |  |  |  +--Wife One 
|     |  +--Jane Morison  (6 APR 1721-11 NOV 1791)
|     |     +--Margaret Wallace  (1687-18 APR 1769)
|  +--Jonathan Mitchell  (21 JAN 1787-1 SEP 1853)
|  |  |     +--Thomas Steele  (1683-22 FEB 1748)
|  |  |  +--David Steele  (30 JAN 1727-19 JUL 1809)
|  |  |  |  |  +--John Morison  (1628-16 FEB 1736)
|  |  |  |  +--Martha Morison  (1682-22 OCT 1759)
|  |  |  |     +--Wife One 
|  |  +--Martha Steele  (1763-9 FEB 1853)
|  |     +--Janet Little  (1729-30 SEP 1816)
+--Frances Mitchell  (19 APR 1820-)
   +--Sally White  (1787-1861)