Jay Silverheels was a Kanien'kehá:ka actor born Harold J. Smith on May 26th, 1912. He was born on the Six Nations of the Grand River First Nation reservation, the most populous First Nation in Canada, and the only nation in which all six Iroquois nations live together. He was the third of eleven children born to Major George Smith, the most decorated Native American soldier in the Canadian Army, who served in World War I.

Harold began going by the name Jay and was given the nickname Silverheels when he played on the lacrosse team, the Mohawk Stars, at sixteen. He later moved across the Niagara River to play lacrosse on the North American Amateur Lacrosse Association team, the Rochester Iroquois. He also boxed and in 1938 placed second in the middleweight section of the Golden Gloves tournament. He lived for a time in Buffalo, where he had his first son, Ron, with Edna Lickers.

The previous year he'd begun working in film, as an extra in the musical comedy, Make a Wish. He married his first wife, Bobbi, and they had a daughter named Sharon. They divorced in 1943. Over the next few years he appeared, usually uncredited, as a stuntman or extra in The Sea Hawk, Too Many Girls, Hudson's Bay, Wester Union, Jungle Girl, This Woman is Mine, Valley of the Sun, Perils of Nyoka, Good Morning, Judge, Daredevils of the West, The Girl from Monterrey, Northern Pursuit, The Phantom, I Am an American, Raiders at the Border, Passage to Marseille, The Tiger Woman, Haunted Harbor, Lost in a Harem and Song of the Sarong.