Complex sentence: He was born in Pensacola, Florida to Joseph Angelo D'Allesandro II, who was in the U.S. Navy, and his mother, Thelma Testman, was 16 years old.
Split into simpler sentences: He was born in Pensacola, Florida to Joseph Angelo D'Allesandro II, who was in the U.S. Navy. His mother, Thelma Testman, was 16 years old.