Edward the Black Prince as their lord, but the murder of Jacob van Artevelde put an end to this project. Both in September and in the following April the prince was called on to furnish troops from his principality and earldom for the impending campaign in France, and as he incurred heavy debts in the king's service his father authorised him to make his will, and provided that in case he fell in the war his executors should have all his revenue for a year. Edward, Prince of Wales sailed with King Edward III on 11 July 1346, and as soon as he landed
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.