Complex sentence: In 1940, at the age of 31, he married actress Gloria Blondell (the younger sister of Joan Blondell); they later divorced amicably in 1945 without having had children.
Split into simpler sentences: In 1940, at the age of 31, he married actress Gloria Blondell, the younger sister of Joan Blondell. They later divorced amicably in 1945 without having had children.