His father was a grazier and his uncle Fred a Sopwith Camel pilot in World War I who was killed in action .
Gibbes ' grandfather , Augustus Onslow Manby Gibbes , owned Yarralumla station , subsequently the official residence of Australia 's Governor - General .
Gibbes ' father was a grazier and his uncle Fred a Sopwith Camel pilot in World War I who was killed in action .
Gibbes ' grandfather , Augustus Onslow Manby Gibbes , owned Yarralumla station , subsequently the official residence of Australia 's Governor - General .