The Statute of Rhuddlan was issued from Rhuddlan Castle in North Wales, one of the "iron ring" of fortresses built by Edward I to control his newly conquered lands. It provided the constitutional basis for the government of what was called "The Land of Wales" or "the king's lands of Snowdon and his other lands in Wales", but subsequently called the "Principality of North Wales". The Statute divided the principality into the counties of Anglesey, Merionethshire, Caernarfonshire, and Flintshire, which were created out of the remnants of the Kingdom of Gwynedd in North Wales. Flintshire was created out of the lordships of Tegeingl, Hopedale, and Maelor Saesneg. It was administered with the Palatinate of Cheshire by the Justiciar of Chester.