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 12 December 2012, published the next day, and received Royal Assent on 25 April 2013. It was brought into force on 26 March 2015, at the same time as the other realms implemented the Perth Agreement in their own laws. No woman has yet held the title "Princess of Wales" in her own right. Since the title of "Prince of Wales" is not automatic, there have been times when it was held by no one. There was no heir apparent during the reign of King George VI, who had no sons. Princess Elizabeth was heiress presumptive and was hence not