Edward Moore Kennedy was an American politician and lawyer who served as a U.S. Senator from Massachusetts for almost 47 years, from 1962 until his death in 2009. A member of the Democratic Party and the Kennedy political family, he was the second most senior member of the Senate when he died and is the fourth-longest-continuously-serving senator in United States history. Kennedy was a brother of President John F. Kennedy and U.S. Attorney General and U.S. Senator Robert F.