Prince of Wales regard as having been the last native Prince. On 16 September 1400, he was proclaimed Prince of Wales by his supporters, and held parliaments at Harlech Castle and elsewhere during his revolt, which encompassed all of Wales. It was not until 1409 that his revolt in quest of Welsh independence was suppressed by Henry IV. The tradition of conferring the title "Prince of Wales" on the heir apparent of the monarch is usually considered to have begun in 1301, when King Edward I of England invested his son Edward of Caernarfon with the title at a Parliament held in Lincoln.
Frederick, Prince of Wales patronage of the arts is "Rule, Britannia!", one of the best-known British patriotic songs. It was composed by the English composer Thomas Arne and written by the Scottish poet and playwright James Thomson as part of the masque "Alfred" which was first performed on 1 August 1740 at Cliveden, the country home of the Prince and Princess of Wales. Thomas Arne was also one of Frederick's favourite artists. A masque linking the Prince with both the medieval hero-king Alfred the Great's victories over the Vikings and with the contemporary issue of building up the British sea power obviously went well