John S. GRAHAM ran away with circus 1915

My Grandfather John Samuel GRAHAM is an elusive one.I know very little about him. His daughter, my mother, is still livng, butknows very little about him.He supposedly was born around 1880-90 in Winnipeg, Manitoba, Canada and ran away with the circus at some point.he ended up after I don't know how many years, in Detroit area, Michigan.He married Eleanor THORPE, nee TRAYNOR around 1920, in possibly Wayne Co. She was living with her sister Rose and Rose's husband MAXKLANOW(SKI) (they sometimes didn't use the Polish ending)
Johan and Eleanor'soldest child is my mother, Edna Mae GRAHAM, born 1922 in Hlafway, MI (changed to East Detroit in 1929, and to Eastpointe in 1992)Their other two children were John Thomas Graham, and Eleanor Rose GRAHAM, still living.
Anything anyone knows about any John Samuel GRAHAM would be greatly appreciated.(his middle name isn't definite, it could be Sylvester)