I wish I could help but there appears to be no connection between our families that I can see. John had 3 brothers but he is the only one that came to Canada. The other three stayed in County Armagh until their deaths. In my research I have compiled some information on McKees in Armagh if you have some dates and locations. If you would prefer, my e-mail address is firstname.lastname@example.org
and I'll be glad to help you where I can.