England Recognizes Llywelyn and His Heirs as Kings of Wales and Recognized the Borders of Their Territory.

Llywelyn was the second son of Gruffudd, the eldest, but illegitimate, son of Llywelyn the Great. With two of his brothers, he was invested with power in Gwynedd: following the death of his uncle Dafydd: in 1246. By 1255, he had ousted his brothers, incl