+--Alexander ALLISON Ernest ALLISON | +--Archibald THOMSON (1806-) | +--Robert THOMSON (1840-) | | +--Elizabaeth GETTY (1812-) +--Matilda THOMSON (1879-) | +--John COCHRANE +--Jane COCHRAN (1843-) | +--Thomas MCCLOY +--Letitia FULLERTON +--Elisabeth THOMSON (1791-)