Although the title which Llewelyn ap Jorwerth claimed of Prince of North Wales was recognized by the English court in the earlier days of Henry the Third, it was withdrawn after 1229 and its claimant known only as Prince of Aberffraw.

But the loftier title of Prince of Wales which Llewelyn ap Gruffydd assumed in 1256 was formally conceded to him in 1267, and his right to receive homage from the other nobles of his principality was formally sanctioned.

Near however as he seemed to the final realization of his aims, Llewelyn was still a vassal of the English Crown, and the accession of Edward to the throne was at once followed by the demand of homage.

But the summons was fruitless; and the next two years were wasted in as fruitless negotiation.

The kingdom, however, was now well in hand.
The royal treasury was filled again, and in 1277 Edward marched on North Wales.