I love this photo but again have no clue as to who it is. The identification on the photo is a studio in Detroit, Michigan, so this suggests one of the Thornton family members. Jabez Thornton, John J. Thornton, Samuel Thornton and Bowler Thornton all moved to the Michigan area. Did any of the daughters move as well?
Having said that, I am now thinking this must be Wilbur S. Thornton (1874-1939), son of Richard Best Thornton. For more information click Wilbur. I do not yet know Wilbur’s wife’s name. The reason for feeling strongly that this is Wilbur is that our family file has other pictures of Richard’s family.