When Clarence George King was born on 23 September 1883, in Gingin, Western Australia, Australia, his father, Daniel Constant King, was 49 and his mother, Ann Mortimer, was 44. He married Agnes Ann Andrews in 1911, in Perth, Western Australia, Australia. They were the parents of at least 3 sons and 2 daughters. He died on 17 April 1964, in Perth, Western Australia, Australia, at the age of 80, and was buried in Karrakatta Cemetery, Karrakatta, Western Australia, Australia.