Thanks for replying to the message. Are you by any chance related to the McGuires?
Regarding the documents you site (which are great!), I had stumbled upon all but the last one, the 1920 census in Spencer Town. I'm trying to figure out how it would fit, though.
The 73-year-old Ellen McGuire would have to be John's mother from Ireland who I didn't even know about previously. So this could be a great lead! It's odd, though, that John's marital status would say single, as he was married to Ellen "Nellie" McCullough. Hm...this is a great lead either way, and thanks for the help!