+--David Harkness 
David Harkness 
|        +--Hugh Morrison  (ABT 1704-1765)
|        |  +--  
|     +--John Morrison  (23 Feb 1728-1 Aug 1810)
|     |  +--Martha McCrellis  (1703-3 JAN 1772)
|  +--Hugh Morrison  (22 Apr 1757-23 Mar 1813)
|  |  +--Ann Thompson  (1732-10 NOV 1808)
+--Betsey Morrison  (-5 SEP 1861)
   +--Elizabeth