Wales Beaumaris, Caernarfon and Conwy. His son, the future Edward II, was born at Edward's new castle at Caernarfon in 1284. He became the first English Prince of Wales in 1301, which at the time provided an income from northwest Wales known as the Principality of Wales. The title is granted by the monarch to the heir apparent as a personal honour or dignity, and is not heritable, merging with the Crown on accession to the throne. After the failed revolt in 1294–95 of Madog ap Llywelyn – who styled himself Prince of Wales in the Penmachno Document – and the
Prince of Wales nephew Llywelyn ap Gruffudd succeeded to the throne of Gwynedd, and used the style as early as 1258. In 1267, with the signing of the Treaty of Montgomery, he was recognised by both King Henry III of England and the representative of the Papacy as Prince of Wales. In 1282, Llywelyn was killed during Edward I of England's invasion of Wales and although his brother Dafydd ap Gruffudd succeeded to the Welsh princeship, issuing documents as prince, his principality was not recognised by the English Crown. Three Welshmen, however, claimed the title of Prince of Wales after 1283. The first