Lizzie was correct, I got a notification via e-mail.
I agree about Barony, and believe the Robert Cunningham that is our common ancestor, was christened 3rd August 1777, Barony (Near Glasgow), Lanarkshire, to father William and mother Helen. Not sure how hard and fast this is, but that gives siblings William (b1772) and Janet (b1775), and marriage of William and Helen Wallace (maybe Willat, Wallas) 30 Nov 1771 Barony. Its been a while since I looked into this, so can't remember how tenuous the information is. My notes say Robert "Enlisted aged 20 Soldiers Unit, 3 Battalion, Royal Artillery", and it seems when he came out of the army he headed south.
Lesley, I am decendant from the Cunninghams via Welton and Wyatt, and there are Wyatts in Canada near you, so are you part of that family branch?