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.
Prince of Wales now often assists the Queen in the performance of her duties, for example, representing the Queen when welcoming dignitaries to London and attending State dinners during State visits. He has also represented the Queen and the United Kingdom overseas at state and ceremonial occasions such as state funerals. The Queen also has given the Prince of Wales the authority to issue royal warrants. For most of the post-Roman period, Wales was divided into several smaller states. Before the Norman conquest of England, the most powerful Welsh ruler at any given time was generally known as King of the Britons. In