Richard de Clare, 5th Earl of Hertford, was a prominent English nobleman born around 1220. He was the son of Gilbert de Clare, 4th Earl of Hertford and Isabel Marshal. Richard inherited his title in 1262 and played a significant role in the political landscape of medieval England, particularly during the reign of King Henry III. Throughout his life, Richard was involved in various military campaigns and was a supporter of the monarchy. He participated in the Barons' War, which was a conflict between the king and rebellious nobles. Richard de Clare passed away in 1262, leaving behind a legacy tied to the de Clare family and their influence in English history.