Hi Ken,
So, a bit late in this response, but was doing some research and found your post. John and Isabelle Easdon were my grandparents too. From Paisley, Scotland. Came to Detroit in the '30's. I never knew John, but knew Bella (as my relatives and dad would refer to her). She was a spitfire. Great to talk to and get to know. Maybe perhaps your father was Henry, my dad's brother (as you stated in your post)?
Regards,
Kim