I expect Tom Kermen would have picked this up anyway, but you might try him on kermen@att.net. He knows a lot about Kermeens, and runs a MyFamily site devoted to them.
To help others help you, can you obtain a copy of the death and/or marriage certificate of your earliest Kermeen immigrant to Canada? That could tell you roughly when he was born and who his parents were. Post this information up on another message, and some kind soul is bound to look them up in the IGI and report what is to be found there.