The child's father, Frederick Cecil Vernon Clarke, was born 25 October 1893 at Hotspur, Victoria (Birth Registration 32584/1893, Hotspur). He married Ida Eileen Barrett on 11 September 1918 at Boulder (Marriage Registration 40/1918, Boulder). She was born in Broken Hill in 1895. The couple had three children. Leslie Vernon had an older sister and a younger sister. It is not known how or why the marriage ended but Frederick Cecil Vernon went on to have two more marriages before his death in Perth on 13 August 1966.