Yup, he goes to a lot of estate sales, flea markets, etc. I don't believe there is a name on the back.
I find this stuff so fascinating though. He usually can spot clothing, background stuff, like dolls, toys, etc, that would indicate a specific period in time, but not much on this photo. It's for sale for $150 right now so he knows it's gotta be someone worth something... says if it is, it may be worth hundreds, if not thousands of dollars. He's had photos like this before worth a lot!
It's a mystery!
I found Brigham Young, looking very similar at one point in time, but it's not him.