Joseph P. Kennedy, Sr. (1888-1969), eldest son of P. J. and Mary. He was the third generation of the family as another businessman and politician. He married Rose Elizabeth Fitzgerald (1890-1995), the daughter of the mayor of Boston. He was a successful businessman and was very wealthy. He was friend with Franklin D. Roosevelt and served as the U.S.A ambassador to Great Britain. He wanted to create a family of powerful politicians, and succeeded. He became the patriarch of the family.