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.
Princess of Wales Wales, but this was incorrect because she was not a princess in her own right. Although not granted the title in her own right, the future Queen Mary I was, during her youth, invested by her father, King Henry VIII, with many of the rights and properties traditionally given to the Prince of Wales, including use of the official seal of Wales for correspondence. For most of her childhood, Mary was her father's only legitimate heir, and for this reason she was often referred to as "the Princess of Wales", although Henry never formally created her as such. For example,