Biden was born in Scranton, Pennsylvania, the son of Joseph Robinette Biden, Sr. (1915–2002) and Catherine Eugenia "Jean" Finnegan (born 1918).[2][3] He was the first of four siblings[3] and is of English heritage on his father's side and Irish heritage on his mother's side. He has two brothers, James Brian Biden and Francis W. Biden, and a sister, Valerie (Biden) Owens.[4] The Biden family moved to Claymont, Delaware, when Biden was 10 years old,[3] and he grew up in suburban New Castle County, Delaware, where his father was a car salesman. In 1961, Biden graduated from Archmere Academy in Claymont, Delaware[3] and, in 1965, from the University of Delaware in Newark,[5] where he double-majored in history and political science.[3] He went on to receive his J.D. from Syracuse University College of Law in 1968, and was admitted to the Delaware Bar in 1969.[5][6]
Biden received five student draft deferments during this period, with the first coming in late 1963 and the last in early 1968, at the peak of the Vietnam War.[7] In April 1968, he was reclassified by the Selective Service System as not available for service due to having had asthma as a teenager.[7]
On August 27, 1966 (while in law school) Biden married Neilia Hunter. They had three children, Joseph R. "Beau" Biden III, Robert Hunter, and Naomi Christina (aka Amy). His wife and infant daughter died in a car accident shortly after he was first elected to the Senate in 1972. His two sons, Beau and Hunter, were seriously injured in the accident, but both eventually made full recoveries. Biden was sworn into office from their bedside. Persuaded not to resign in order to care for them, Biden began the practice of commuting an hour and a half each day on the train from his home in the Wilmington suburbs to Washington, D.C., which he continues to do.
In 1977, Biden married Jill Tracy Jacobs. They have one daughter, Ashley Blazer Biden, and are members of the Roman Catholic Church. In February 1988, after suffering from neck pains, Biden was hospitalized and underwent lifesaving surgery to correct two brain aneurysms, one of which began leaking.[8] The hospitalization and recovery kept him from his duties in the U.S. Senate for seven months.
Biden's elder son, Beau, had been a partner in the Wilmington law firm of Bifferato, Gentilotti, Biden & Balick, LLC until he was elected Delaware Attorney General in 2006. Beau is a captain in the Delaware Army National Guard, where he serves in the Judge Advocate General's (JAG) Corps. He is set to be deployed to Iraq in October 2008.[9] Biden's younger son, Hunter, works as a lawyer in Washington, D.C., serves on the board of directors of Amtrak, and previously worked in the Commerce Department.
In 1981, Biden received an honorary degree from Saint Joseph's University.[10] Since 1991, Biden has also served as an adjunct professor at the Widener University School of Law. He teaches a seminar on constitutional law.