Following his conquest Edward I erected four new marcher lordships in northeast Wales: Chirk (Chirkland), Bromfield and Yale (Powys Fadog), Ruthin (Dyffryn Clwyd) and Denbigh (Lordship of Denbigh); and one in South Wales, Cantref Bychan. He restored the principality of Powys Wenwynwyn to Gruffydd ap Gwenwynwyn who had suffered at the hands of Llewelyn, and he and his successor Owen de la Pole held it as a marcher lordship. Rhys ap Maredudd of Dryslwyn would have been in a similar position in Cantref Mawr, having adhered to the king during Llewelyn's rebellion, but he forfeited his lands by rebelling in 1287. A few other minor Welsh nobles submitted in time to retain their lands, but became little more than gentry.