Louis Keegan Telford was born on 25 April 1887, in Perth, Western Australia, Australia as the son of John Telford and Ellen Keegan. He married Mary Alice Quinn on 1 January 1919, in Midland Junction, Western Australia, Australia. They were the parents of at least 1 daughter. He died on 7 January 1974, in Mount Lawley, Western Australia, Australia, at the age of 86, and was buried in Karrakatta, Western Australia, Australia.