Background
He was born in Adelaide, South Australia, a son of Hew O"Halloran Giles, and Mistress Giles (a daughter of Doctor West A Verco) of Thorngate, then "Willyama", Medindie and educated in Victoria at Geelong Grammar School before returning to South Australia to attend the University of Adelaide and Roseworthy College.
Career
He became a grazier and cattle breeder, and served in the military from 1942 to 1945 during World World War World War II In 1959, he was elected to a Southern district seat in the Legislative Council as a Liberal and Country League member. He held Angas until its abolition in 1977. He then followed most of his constituents into neighboring Wakefield, defeating fellow Liberal Bert Kelly for preselection.
Giles served as the member for Wakefield until his retirement in 1983.
He died in 1990.