Background
He was born on Cape Breton Island, Canada, but moved to New York as a teenager to join his brother.
He was born on Cape Breton Island, Canada, but moved to New York as a teenager to join his brother.
He competed in weight throwing events in the 1904, 1908 and 1912 Summer Olympics. In 1904, Gillis accidentally killed a boy when he was practicing his hammer throw in a vacant lot in Harlem. Gillis was practicing with a 16-pound hammer in a vacant lot on Park Avenue between 134th and 135th street on September 30, 1904, and "just as he had let the 16 pound hammer go for an extra long throw, Christian Koehler, a fourteen-year-old boy, climbed the fence in pursuit of a baseball.
Gillis and several boys shouted a warning, but Koehler did not hear.
The hammer struck him in the head and he was instantly killed." Gillis, who was a big, good-natured fellow, was said to be "..heartbroken over the affair."
In 1908 he finished seventh in the hammer throw event. He also participated in the discus throw event but his result is unknown. hammer with a throw of 164 feet 5 inches.
Four years later he competed in the 1912 Olympic hammer throw contest but was not able to set a mark. A carpenter by trade, after the 1908 Olympics he joined the New York City police force.
He later took a contracting job in Spain, and spent a few years working in Europe.
On his return to New York he worked for Thomas Edison creating screen titles for silent movies, and even made a few film appearances. Gillis ended his working life building smokestacks for smelting metal.
He was one of a group of athletes known as the Irish Whales and frequently kept company with members of the Irish American Athletic Club.