Theodore "Teddy" Roosevelt (October 27, 1858 – January 6, 1919) was the 26th President of the United States from 1901-1909. He is noted for his energetic personality, range of interests and achievements, leadership of the Progressive Movement, and his "cowboy" image and robust masculinity. He was a leader of the Republican Party and founder of the short-lived Progressive ("Bull Moose") Party of 1912. Before becoming President he held offices at the municipal, state, and federal level of government. Roosevelt's achievements as a naturalist, explorer, hunter, author, and soldier are as much a part of his fame as any office he held as a politician.