William E. Green of Toronto is a descendant of the United Empire Loyalist Daniel Green who settled in 1795 on the land that is now the City of Summerside in Prince Edward Island. The family lineage follows from Daniel to Israel (1792-1869) to James Ira (1845-1893) to Benton Walter (1882-1942), the grandfather of William E. Green. Benton Green moved to Halifax around 1917 where he worked as a manager with the firm of Wood Brothers. He married Ella Jean Dowling of Summerside in 1909 and they had three children, including Kenneth (1910-1998), the father of William E. Green.