High Quality Content by WIKIPEDIA articles! Edward Moore "Ted" Kennedy (February 22, 1932 – August 25, 2009) was a United States Senator from Massachusetts and a member of the Democratic Party. Serving almost 47 years, he was the second most senior member of the Senate when he died and is the fourth-longest-serving senator in United States history. For many years the most prominent living member of the Kennedy family, he was the last surviving son of Joseph P. Kennedy, Sr.; the youngest brother of President John F. Kennedy and Senator Robert F. Kennedy, both victims of assassination, and Joseph P. Kennedy, Jr., killed in action in World War II; and the father of Congressman Patrick J. Kennedy.