Who are really the people in the photo found in the Soviet installation

In Rise of The Tomb Raider, one of the secret items(relics) hidden near the soviet installation is a photo of a family. When Lara analyzes the photo, she reads the word Remember on the back (seems it's not written in English).

My question is, it's a real photo of real people. Who are they?

Here is the picture:

Solution 1:

The only match in a reverse image search is from a genealogy page on the 100th birthday of Steve Miklo (2013). Steve's father moved to the United States and eventually gave his land to his brother, Ján (Steve's uncle). Steve came to live with them. The blog's maintainer dates the photo in question to the 1940s in Drahovce (western Slovakia). Steve's Uncle Ján and Aunt Marie sit in the front row and are surrounded by their children (but not Steve).

There does not appear to be any connection between a member of the Miklo family and Crystal Dynamics, though perhaps one between Google Images and Russian family photos.