+--John Morison  (1628-16 FEB 1736)
               +--John Morison  (1678-14 JUN 1776)
               |  +--Wife One 
            +--Thomas Morison  (1710-23 NOV 1797)
            |  +--Margaret Wallace  (1687-18 APR 1769)
         +--Robert Morison  (29 NOV 1744-13 FEB 1826)
         |  +--Mary Smith  (1712-29 DEC 1799)
      +--Nathaniel Morison  (11 OCT 1779-11 SEP 1819)
      |  +--Elizabeth Holmes  (23 JUN 1754-17 MAY 1808)
   +--Nathaniel Holmes Morison  (14 DEC 1815-)
   |  |     +--John Hopkins 
   |  |  +--John Hopkins 
   |  |  |  |  +--John Dinsmoor 
   |  |  |  +--Elizabeth Dinsmoor 
   |  +--Mary Ann Hopkins  (8 SEP 1779-28 AUG 1848)
   |     +--Isabella Reid 
+--Frank Morrison  (18 MAR 1844-)
|  +--Sidney Buchanan Brown 
Isabel Morison  (13 FEB 1880-)
|  +--James McGregor 
+--Leslie McGregor