Do a search for Lloydminster Meridian Booster they may have carried his obit. The Funeral home would probably been McCaw's funeral home in Lloydminster. I found them using GOOGLE and both can be contacted on-line. Lots of Watsons in the Lashburn on-line history book, but don't seem related.
http://www.ourroots.ca/e/toc.aspx?id=2480 Butch