I know that you good folks at Wiki are no doubt getting tired of my endless chatter..sorry. I know Arvid William Cessna born 1910 in Kinistino, Saskatchewan and he was still there in 1931 (he is on the 1931 census) when he was 21 years old. Sometime after that he must have gotten married either in Saskatchewan or in Ontario...perhaps in or near Hamilton where his kids were born. One of his grandsons is pretty sure her first name was Margaret..but what was her surname? One of her daughters was named Margaret so that lends a wee bit of credibility to her grandson's memory. I do know now that Arvid's parents were Pearl William Cessna and Ida Sophia Lofdahl but who was their daughter-in-law? Thank you very much, John