The Lordship of Glamorgan was a historical feudal estate in South Wales, primarily associated with the area now known as Glamorgan. Established in the 12th century, it was granted to the de Clare family, who played a significant role in the region's development. The lordship encompassed various towns and villages, influencing local governance and land ownership. Over time, the Lordship of Glamorgan became a key part of the County of Glamorgan, which was later incorporated into the County Borough of Cardiff. The lordship's legacy is evident in the region's rich history, including its castles, churches, and the evolution of local society.