The term "de Clare" refers to a prominent Anglo-Norman family that played a significant role in the history of England and Wales during the medieval period. The family originated from the Normandy region of France and became influential after the Norman Conquest of 1066. Members of the de Clare family held various titles, including earls and barons, and were known for their extensive landholdings and political power. One of the most notable figures from the de Clare family was Gilbert de Clare, who became the Earl of Pembroke and played a key role in the Welsh Wars. The family was also involved in the Barons' War against King John and later supported the Plantagenet dynasty. Their legacy includes significant contributions to the development of medieval English society and governance.