Lord Canterbury was succeeded by his eldest son, the second Viscount. He died unmarried and was succeeded by his younger brother. He was a politician and colonial administrator. The titles descended from father to son until the death of his grandson, the fifth Viscount, in 1918. The late Viscount was succeeded by his first cousin, the sixth Viscount. He was the son of the Hon. Graham Edward Henry Manners-Sutton, younger son of the third Viscount. Lord Canterbury had no sons and on his death in 1941 both titles became extinct.