+--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)
Robert L. Cummings  (18 JUN 1829-)
+--Elizabeth Little  (8 APR 1804-17 FEB 1875)