Bilbo Baggins was a Hobbit, and the main protagonist in The Hobbit. He was hired by Thorin and Company to be their burglar on the Quest of Erebor, and later fought in the Battle of the Five Armies. Bilbo was also one of the bearers of the One Ring, and the first to voluntarily give it up, although with some difficulty. He wrote of his adventures in a book he calledThere and Back Again. Bilbo adopted Frodo Baggins as his nephew after his parents, Drogo Baggins and Primula Brandybuck, drowned in theBrandywine River. Bilbo was the first Hobbit to become famous in the world at large and one of the few to visit the The Undying Lands.