By the way, the Bossy's name in French/Italian would be 'Bossi', wouldn't it? I've always wondered how it got Anglicized, and why. Anyone know?
Yes, his grandfather Volodymyr Bosyj (Володимир Босий) changed his name to Walter Bossy after escaping to Canada in 1924 from what was then Poland. He was a Ukrainian nationalist and had participated in a failed plot to murder the police commissioner of Lwów (the Polish police did not treat Ukrainian nationalists kindly at the time).
You can read more about Walter Bossy here:
http://www.encyclopediaofukraine.com/display.asp?linkpath=pages\B\O\BosyVolodymyr.htm
And about his later activity in Canada:
https://multiculturalismcanada.com/...-of-the-canadian-ethnic-mosaic-confederation/