One of the many photos sitting in my G Grandmother's album has finally been identified. For the last 35 years, I was sure I knew who the two boys were. But only this weekend have I found that one of the boys is a younger brother. 
This branch of the family has been quite elusive over the years, but I found a niece of my cousin's wife on Ancestry who happened to have all her aunt and uncles photos. 
The motto is to contact everyone, even if they are related by marriage.