Red River Ancestry

Hi. I have a photograph of an unidentified man that was taken in the studio of Ryder Larsen. In 1869-70 Larsen was charged in the murder of a Thomas Johnstone during a brawl in the home of Peter Pruden in St. Andrews. My great great grandfather was Archibald David Johnstone. There is a possibility that Thomas Johnstone & Archibald David Johnstone were somehow related. Do you have information that would establish the connection?

Would need more information to properly search for him.
Sprague & Frye ID-2435: Thomas JOHNSTON, Metis born 1842 and died 1869. His family on Lot 69 St Andrews in 1870.