+--Robert Morrison  (ABT 1700-1764)
         +--William Morrison  (BET 1720 AND 1727-1758)
         |  +--Unknown    (Abt. 1700-Bef. 1750)
      +--Robert Montgomery Morrison  (January 26, 1751-6 FEB 1808)
      |  |           +--John Montgomery  (1640-1689)
      |  |        +--Robert Montgomery  (1660-1689)
      |  |        |  +--Isabella Shaw 
      |  |     +--William Montgomery  (1675-MAY 1733)
      |  |     |  |  +--High McCullom 
      |  |     |  +--Mary McCullom  (1665-3 Dec 1692)
      |  |  +--John Montgomery  (1703-4 OCT 1743)
      |  |  |  +--Mary Akin  (1682-1756)
      |  +--Sarah Montgomery  (1728-3 OCT 1817)
      |     |  +--James HARPER  (1676-1775)
      |     +--Sarah Harper  (1705-1749)
      |        +--Jannett LEWIS  (26 Feb 1657-)
   +--Montgomery Morison  (14 APR 1783-10 March 1846)
   |  +--Dorcas Staples  (9 Dec 1703-26 JAN 1805)
+--Nathaniel Morison  (14 Sep 1817-14 February 1856)
|  +--Keziah Cothren  (14 October 1789-14 May 1878)
John Morison  (12 OCT 1848-UNKNOWN)
+--Hannah Bachelder  (-UNKNOWN)