I think the above young gentleman is John Barton Montgomery Sr. who was born in KY in May 1887 and died in IN on 8 March 1951. He was variously known as John, Bart, and a combination of these two. He had a son whose name was John Barton Montgomery Jr. (1926-2009) according to what is written on his tombstone.
“Bart” married Heathy E. Mitchell in September 1916, and they had four sons and two daughters.
If you’re a member of this family and would like more information, just give me a holler.
I purchased this photograph during Thanksgiving week 2015 at Sturgis Antiques on The Avenue in Hampden, Baltimore, MD.
***Update on 28 March 2016*** Today I heard from some of John’s grandchildren who live in Georgia and I mailed them the photograph this afternoon.