Robert FitzWalter was a prominent English nobleman and military leader during the 12th and 13th centuries. He was born around 1160 and became known for his role in the conflicts between the English crown and rebellious barons. FitzWalter was a key figure in the Barons' War, which sought to limit the power of King John. FitzWalter was also a signatory of the Magna Carta in 1215, a historic document that established certain legal rights and limited the authority of the monarchy. His actions and alliances significantly influenced the political landscape of medieval England, making him an important figure in the struggle for baronial rights.