+--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)
      +--Robert Morison  (8 MAY 1784-25 APR 1861)
      |  +--Elizabeth Holmes  (23 JUN 1754-17 MAY 1808)
   +--Josiah S. Morison  (12 JAN 1808-)
   |  |  +--Josiah C. Spring 
   |  +--Betsey Spring  (28 JUN 1787-)
+--Robert S. Morrison  (25 OCT 1845-)
|  +--Phoebe V. Knight  (19 JUN 1807-)
Jessie Ethel Morrison  (16 SEP 1869-)
+--Sarah A. Washburn  (1 MAY 1844-)