Nevill of Abergavenny was a prominent noble family in medieval Wales, known for their influence and land ownership. The family originated from the Nevill family in England and became significant in the Marches, the border region between England and Wales. They played a crucial role in the political landscape of the time, often aligning with the crown. The most notable member was Richard Nevill, who became the 16th Earl of Warwick and was a key figure during the Wars of the Roses. The family's legacy includes their involvement in various battles and their connections to other noble houses, shaping the history of Wales and England.