@ Steve:
Have you thought of doing an ancestry test- perhaps with 23 and me? They have updates now that define the ethnicity regions more precisely to specific counties, towns. My UK breakdown of regional Glasgow (#1 on the list), etc.. hotspots were what made dig into my Scottish links and lone and behold- that's where they were from. Granted the tests are only as good as the current science, and you may not of inherited all of the relevant DNA, but given your ancestral link, I think that it could triangulate an area at the very least if your ancestor was Scottish. (Now that I think of it, I wouldn't be surprised if Aberdeen or Fife- other hotspots of mine - was where Keillor my ancestor was from).

@Karl R.
Thanks for the honesty. I will remember that line if someone asks me.

@johnny O.
Now this is an avenue that I haven't thought of. Are you suggesting that I ask the Canadian or Scottish clan society for that family name? Is this common practice in Scotland?