Leslie was descended from Alexander "Sandy" Ivall (1831-1911), who emigrated to Canada from Scotland in about 1837. Alexander married Jane Kerr and they had 10 children. Their third child, also called Alexander (1855-1922), married Sarah Baldwin and had 6 children including Joseph William Ivall (1880-1957) who married Ann Kolesar in 1907. They had 9 children, Leslie being the third youngest.
An obituary for Leslie is at https://memorials.northridgefuneralhome.com/leslie-ivall/4636368/
