+--John Cummings 
David Morrison Cummings  (14 FEB 1798-21 SEP 1870)
|  +--William Archibald 
+--Hannah Archibald  (1763-1813)
   |     +--John Morison  (1628-16 FEB 1736)
   |  +--Halbert Morison  (1685-6 JUN 1755)
   |  |  +--Wife One 
   +--Rebecca Morison 
      +--Jean Steele  (1700-19 OCT 1753)