Little Oswald's parents were married in Boulder in 1903 (Marriage Registration 61/1903, Boulder). Another child known to have been born to this couple was Oscar William, who was born in Claremont in 1905 (Birth Registration 1395/1905, Claremont) and who died in Perth in 1968, aged 62 years. The children's father died in 1955 (Death Registration 176/1955, East Coolgardie), aged 70 years. His wife died in 1966 (Death Registration 3441/1966, Perth) aged 86 years.