PS - Another thought... From your earlier postings, guess you are looking for info on William Edwards of Colyton. As Busson is a fairly wellknown name in the Channel Islands, perhaps this is him, on a working visit to relatives.

1841 Census: William Edwards 25 Mason Journeyman at Channel Islands b1816 England

He could then have sailed to Canada from Jersey.

http://en.wikipedia.org/wiki/History_of_Jersey#19th_century
(mentions emigration to Canada)
Good luck.Sue