Trolling through the "about Wendy's" pages reveals that no, Wendy's is not Canadian, which does not particularly surprise me because Dave Thomas has a very strong USn accent, at least to my ears. Apparently Wendy's and Tim's merged in 1995. (Why does this sound like a gossip column?) Tim's was started in 1964, by some guy named Ron Joyce who partnered with Tim Horton (an NHL player).