+--Archibald THOMSON  (1806-)
   +--Robert THOMSON  (1840-)
   |  +--Elizabaeth GETTY  (1812-)
+--James THOMSON 
|  |  +--John COCHRANE 
|  +--Jane COCHRAN  (1843-)
|     |  +--Thomas MCCLOY 
|     +--Letitia FULLERTON 
|        +--Elisabeth THOMSON  (1791-)
Robert THOMSON