+--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)
   +--Ira Morrison  (18 JUL 1798-10 MAR 1870)
   |  +--Eunice Dow  (20 OCT 1770-7 FEB 1854)
+--Ira Plummer Morrison  (22 APR 1842-)
|  +--Sophia Colby  (3 MAR 1801-)
Grace Morrison  (20 JAN 1875-)
+--Mary South