Complex sentence: His mother, Sarah Jane (née Price), was a retired actress, and his father, Arthur Washington Lithgow III, from Dominican Republic was a theatrical producer and director who ran the McCarter Theatre in Princeton, New Jersey.
Split into simpler sentences: His mother, Sarah Jane (née Price), was a retired actress. His father, Arthur Washington Lithgow III, who was born in Dominican Republic, was a theatrical producer and director who ran the McCarter Theatre in Princeton, New Jersey.