Oliver Piers St. Aubyn (1920-2006) (1920–2006) Parents Clementina Nicolson Francis St Aubyn, 3rd Baron St Levan Children Nick St Aubyn Siblings The Hon. Philippa St. Aubyn Giles Rowan St. Aubyn Jessica St. Aubyn John St Aubyn, 4th Baron Saint Levan Partners Mary Bailey Southwell