Joseph Patrick Kennedy III (born October 4, 1980), is an American lawyer and politician serving as the U.S. Representative from Massachusetts's 4th congressional district since 2013. A Democrat, his congressional district extends from the western suburbs of Boston to the state's South Coast. A son of former Representative Joseph P. Kennedy II, he worked as a Peace Corps volunteer and as an assistant district attorney in the Cape and Islands and Middlesex County, Massachusetts offices before his election to Congress.