Neilia Hunter Biden (July 28, 1942 – December 18, 1972) was an American teacher and the first wife of Joe Biden, the 46th president of the United States. She died in a car crash in 1972 with their one-year-old daughter, Naomi. Their two sons, Beau and Hunter, were critically injured but survived the incident. Her death occurred six weeks after her husband's election to the U.S. Senate.