The De Grey Barony is a historical title in the British peerage system, originating in the 12th century. It was created for the De Grey family, who played significant roles in English history, particularly during the medieval period. The barony is associated with various estates and lands, primarily in Bedfordshire. The title has passed through generations, often linked to notable figures and events. The De Grey family has contributed to the political and social landscape of England, with members serving in the House of Lords and participating in various historical developments.