Complex sentence: Later, he joined his father's business, the Cowasjee Group, and married Nancy Dinshaw in 1953 with whom he had two children, Ava (daughter) and Rustom (son).
Split into simpler sentences: Later, he joined his father's business, the Cowasjee Group, and married Nancy Dinshaw in 1953. He has two children, Ava (daughter) and Rustom (son).