+--John Gregg  (1 JAN 1796-6 DEC 1872)
George Morrison Gregg  (14 JUL 1844-)
|        +--John Morison  (1628-16 FEB 1736)
|     +--Joseph Morison  (1720-17 FEB 1806)
|     |  +--Jeanette Steele 
|  +--Jonathan Morison  (JUL 1759-7 MAR 1847)
|  |  +--Mary Holmes 
+--Louisa Morrison  (SEP 1800-)
   +--Anna Davis