Complex sentence: At age of 20, Keyes met his first wife, Roberta Rymer, at the University of Miami, and they were married in December 1941, just days after the attack on Pearl Harbor.
Split into simpler sentences: At age of 20, Keyes met his first wife, Roberta Rymer, at the University of Miami. They were married in December 1941, just days after the attack on Pearl Harbor.