Complex sentence: Having no sons, Olivier's peerage became extinct upon his death in 1943, though his nephew, the actor Laurence Olivier, would be granted a life peerage in 1970 as Baron Olivier, of Brighton in East Sussex.
Split into simpler sentences: Having no sons, Olivier's peerage became extinct upon his death in 1943. His nephew, the actor Laurence Olivier, would be granted a life peerage in 1970 as Baron Olivier, of Brighton in East Sussex.