These marcher lordships were present in Brittany, Spain, and Bavaria. The remainder would be granted to Edward's supporters as new Marcher lordships. This castle near Oswestry was their main residence and the seat of a marcher lordship. It was the centre of the Marcher Lordship of Denbigh. It was the administrative centre for the Marcher Lordship of Chirkland. The jurisdiction of the remaining marcher lords was thus an anomaly. I of England and the Marcher Lords. Other parts of southern Wales were in the hands of various Marcher Lords. I Longshanks life became more peaceful in this Marcher town. The proposition that Haverfordwest Castle was founded by Tancred, a Flemish Marcher Lord, is questionable. For this Walter lost many of his Marcher Lord privileges. In early 1321, Lancaster mobilised a coalition of the Despensers' enemies across the Marcher territories. It was the civil parish corresponding to the marcher borough of Laugharne. The Mortimers were the most powerful marcher family of the fourteenth century. Llywelyn built up marriage alliances with several of the Marcher families.