Diamond was born Leland Diamond, May 30, 1890, in Bedford, Ohio. His parents, Herbert Caleb Diamond (1864â1932) and Mima Ellenor (1866â1921), were Canadians from Belleville, Ontario. His father was the youngest of the famed Diamond Brothers of the North-West Mounted Police (NWMP), who served in the Red Deer District of Alberta in the 1880s.