His parents, Herbert Caleb Diamond (1864–1932) and Mima Ellenor (1866–1921), were Canadians from Belleville, Ontario.
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The Filipino-American actor Lou Diamond Phillips was named after him by his father, an officer in the U.S. Navy.
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Actor Ward Bond portrayed Diamond in an episode of the television
Lou Reed | Neil Diamond | Lou Gehrig | Lou Harrison | Diamond Jubilee | Lou Rawls | Mary Lou Retton | Lou Grant | Lou Holtz | Jared Diamond | Lou Donaldson | diamond | Lou Piniella | Lou Grant (TV series) | Lou Diamond Phillips | Diamond Jubilee of Elizabeth II | Diamond Head | Diamond | Richard Diamond, Private Detective | Lou Costello | Diamond Firetail | Lou Savarese | Lou Adler | Lou Barlow | King Diamond | Diamond Challenge Sculls | Walk on the Wild Side (Lou Reed song) | Lou Pearlman | Lou Ferrigno | Lou Brock |