+--Samuel Morison  (1671-29 SEP 1757)
         |  +--  
      +--Samuel Morrison  (13 Mar 1727-15 Mar 1775)
      |  +--Margaret Henry  (1685-30 APR 1774)
   +--David Morrison  (27 AUG 1763-8 DEC 1832)
   |  |  +--Randal Alexander 
   |  |  |  +--  
   |  +--Isabel Alexander  (16 FEB 1721/22-AFT 1776)
   |     +-- Janet 
+--Nehemiah Morrison  (21 AUG 1794-JAN 1871)
|  +--Mary Kimball 
John Morrison 
+--Mary French