Ian is my great-uncle but I sadly never knew of him until this week.
The family moved to Canada in 1903 and came back in 1907 during which time my grandfather was born. I found most of the family in the 1911 census living in Allan Street, Glasgow. I found the passenger lists for the outbound journeys last year and then this week I found the return journey in August 1907.
Only John Crawford Jr moved to Canada (I think!) I hadn't taken into account that any more of the family might have moved back. He married my grandmother in 1927 but I think they divorced around the time my father was born in 1928. My father never knew his father and had always wondered what became of him, hence my research. Once of the pieces of documentation I found was the application for his registration of birth. The address that he gave at that time was Selma, Taynuilt, Argyll, Scotland. He also put the same address for his father, also John Crawford and his mother's name was entered as Jeanie Bell. The date of this application was October 1944.
Anyway, I found that my grandfather died in Osoyoos, British Columbia in 1979 at the age of 74. He had remarried by then and his second wife was a German lady called Hedwig (Hedy) Niewerth. I know that she emigrated to Canada in 1952.
I'm delighted to have found this thread as it's provided me with some more information that I didn't have.