Fro;m http://www.biographi.ca/ for James, Gibb: "businessman born 22 April 1799 in Carluke, Scotland; married 8 May 1822 to Marion Torrance in Montreal. He arrivedat Quebec in 1814 at the age of 15 and went to work as a clerk for William Torrance who like his brothers John and Thomas of Montreal, traded in foodstuffs, wine and spirits. ......in 1815 his sister married William Torrance, and seven years later Gibb himself married one of William's sisters."
William's father was born in Larkhall, Scotland 1735 and died there in 1895.
There appears to be enough commonality to suspect connections.
I am a direct descendent from William. I have some more history to share and would appreciate any related information. Is Larkhall near Galston?? There also was the Kirk of Torrance in/near East Kilbride