Eward Moore "Ted" Kennedy (born February 22, 1932) is the senior United States Senator from Massachusetts and a member of the Democratic Party. In office since November 1962, Kennedy is the second most senior member of the Senate, after President pro tempore of the United States Senate Robert Byrd of West Virginia. The most prominent living member of the Kennedy family, he is the youngest brother of the late President John F. Kennedy and the late Senator Robert F. Kennedy, and the father of Congressman Patrick J. Kennedy. Kennedy is also the sole surviving son of Joseph Kennedy and Rose Fitzgerald Kennedy, and one of three of their surviving children (along with Eunice Kennedy Shriver and Jean Kennedy Smith).