+--Joseph Mahon  (1804-13 AUG 1855)
Mary Ann Mahon  (21 AUG 1839-13 SEP 1872)
|           +--John Morison  (1628-16 FEB 1736)
|        +--John Morison  (1678-14 JUN 1776)
|        |  +--Wife One 
|     +--John Morison  (20 SEP 1725-27 DEC 1816)
|     |  +--Margaret Wallace  (1687-18 APR 1769)
|  +--Joseph A. Morison  (13 JUL 1769-OCT 1846)
|  |  +--Martha Anderson  (1732-31 MAR 1811)
+--Hannah Morison  (17 AUG 1803-11 SEP 1875)
   +--Isabella Fletcher  (1778-OCT 1821)