Complex sentence: He was born in Helena, Montana, USA to Rancher Michael Fitzgerald and Mary Moran, he's father died when he was two, and his mother who had two children, Frank and Mary from a previous marriage, supported the family by holding several jobs.
Split into simpler sentences: He was born in Helena, Montana, USA to Rancher Michael Fitzgerald and Mary Moran. His father died when he was two and his mother who had two children, Frank and Mary from a previous marriage, supported the family by holding several jobs.