Antonia Mary Roby Benson (1903-1977) (1903–1977) Parents Dorothea Mary Roby Thorpe Godfrey Benson, 1st Baron Charnwood Children Sir Anthony John Tennant Mark Tennant Siblings unknown daughter Benson John Benson, 2nd Baron Charnwood unknown son Benson Partners Cyril Radcliffe, 1st Viscount Radcliffe John Tennant