Sir John McEwen was the 18th prime minister of Australia, serving from 1967 to 1968 in a caretaker capacity following the disappearance of prime minister Harold Holt. He was the leader of the Country Party from 1958 to 1971, serving as the inaugural deputy prime minister of Australia from 1968 to 1971. Born: March 29, 1900 Died: November 20, 1980 In office: December 19, 1967 – January 10, 1968 Wiki link