Complex sentence: Nelson was the elder son of entertainment couple Harriet (née Hilliard; July 18,1909--October 2,1994) and Ozzie Nelson (March 20,1906--June 3,1975) and the older brother of singer Eric Hilliard "Ricky" Nelson.
Split into simpler sentences: Nelson was the elder son of entertainment couple Harriet (née Hilliard; July 18,1909--October 2,1994) and Ozzie Nelson (March 20,1906--June 3,1975). He was the older brother of singer Eric Hilliard "Ricky" Nelson.