+--Lewis B. Robie 
Edgar Robie 
|           +--Samuel Morison  (1671-29 SEP 1757)
|           |  +--  
|        +--John Morrison  (1721-1776)
|        |  +--Margaret Henry  (1685-30 APR 1774)
|     +--David Morrison  (29 AUG 1750-1812)
|     |  +--Elizabeth Alexander  (ABT 1721-ABT 1811)
|  +--David Morrison  (12 MAR 1783-23 MAY 1850)
|  |  +--Hannah Whitaker  (-1788)
+--Fanny C. Morrison  (16 NOV 1825-26 MAY 1857)
   +--Sally Clark  (WFT Est 1771-1793-WFT Est 1814-1882)