Treaty of Montgomery

The Treaty of Montgomery, signed in 1267, was an agreement between Llywelyn ap Gruffudd, the prince of Gwynedd, and King Henry III of England. This treaty officially recognized Llywelyn as the prince of Wales, a title he had proclaimed himself in 1258. In exchange for this recognition and the right to receive homage from other Welsh princes, Llywelyn acknowledged Henry III's overlordship.1

Llywelyn ap Gruffudd was a Welsh ruler who sought to unite Wales and drive out English influence. He took advantage of conflicts within England to assert his authority. However, after Henry III's death and the accession of Edward I, Llywelyn again defied the English crown. This led to an English invasion and Llywelyn's subjugation in 1277. Despite a subsequent rebellion in 1282, Llywelyn was killed, and Wales eventually fell under complete English rule.1