Welsh barons were to swear fealty to Llywelyn, the only exception being Meredith ap Rees of Deheubarth.
The second struggle of Llywelyn's reign took place between 1267 and1277. He tried to weld his land into a closer union, and many of the chiefs of the south and east became willing to call in the English King. Two of them, his own brother David and Griffith of Powys, fled to England, and were received by Edward, who had been king since 1272. Llywelyn and Edward distrusted each other. Edward wished to unite Britain in a feudal unity, and to crush all opponents. Llywelyn thought of helping the barons; he might become their leader.Eleanor, the daughter of Simon de Montfort, the old leader of the barons, was betrothed to him. War broke out. The barons—Clares and Mortimers, and all—joined the King. Llywelyn's dominions were invaded at all points, his barons had to yield, one after the other;and finally, in 1277, Llywelyn had to accept the Treaty of Rhuddlan. His dominions shrunk to the old limits of Snowdon, his sway over the rest of Wales was taken from him, and the title of Prince of Wales was to cease with his life.
