Complex sentence: Henry, born in Iowa, moved with his family to California when he was one, before Henry had turned four, the family had moved to San Bernardino, California, and by the time he was five, the family was living in Pocatello, Idaho.
Split into simpler sentences: Henry, born in Iowa, moved with his family to California when he was one. By the time he was five, the family was living in Pocatello, Idaho.