My family had several photo albums, with photos often (but not always) labelled. There are a fair number of people that are friends or distant relations, and every now and then I figure out who they are. Today, I made the connection to Roger Ackerley. The photo said "Roger Ackerley, killed in action May 1st 1915, Great European War 1914-1918, aged 19 years & 10 months, 10th Scottish B.K.L.R." and I have been curious about him ever since I found the picture a few years ago. Today I learned he is the brother of the the sister-in-law of my great grandmother.
I still don't know his parents names, but I am happy to know a bit more about him.
And if anyone else like Scottish, English, and New Jersey mystery people, here are a bunch more poorly identified people. https://www.flickr.com/photos/wendelkate/sets/72157648090569659/page3