My grandfather, Noel Francois Coulon, seemed to think that somehow we were connected to Johnny Coulon the boxer. Never did find a connection. My mother has done a great deal of research on our family. Granddad was born in Manchester, NH on Dec 25, 1889. His father, Jean Baptiste Coulon, was born in Redford, NY in 1841. (There is a story that one or two of his brothers "went to the Redwoods and were never heard from" at about the time of the Civil War.) His father, Louis Coulon, was born in Quebec in 1800. The family traces back through many generations in Quebec, and finally to France in the early 1600s.
In her efforts to connect all the "dots" Mom collected a lot of collateral lines of research that I am not up-to-date on. If you have any specifics, I could see if she has anything on it.