But now their identities have been revealed! Yesterday I was contacted by a distant cousin who is the daughter of one of the Barfield men in the photo. That makes her my 1st cousin, twice removed. But it also turns out that she's related to me through my Evans family line, which also makes her my 2nd cousin, once removed. I had to sketch out the family tree to understand the connection.
I think it's pretty neat that we're connected in two different ways. She's going to mail me some additional information. I'm especially interested in what she knows about the John Evans and Leila Craft family, which is a different branch of the Craft family from my direct paternal line (though they do both go back to my 5x Great Grandfather, John Craft). Fingers crossed!