+--John Morison  (1628-16 FEB 1736)
         +--James Morison  (1675-15 MAR 1756)
         |  +--Wife One 
      +--Samuel Morison  (1704-11 FEB 1776)
      |  +--Mary Wallace 
   +--Robert Morrison  (6 FEB 1758-APR 1808)
   |  |  +--Samuel Alison 
   |  +--Martha Alison  (31 MAR 1720-3 DEC 1761)
+--Alva Morrison  (13 MAY 1806-28 MAY 1879)
|  +--Eunice Dow  (20 OCT 1770-7 FEB 1854)
Alva S. Morrison  (9 NOV 1835-)
|  +--Consider Southworth 
+--Myra Southworth  (3 NOV 1810-)