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
Edward of Middleham, Prince of Wales Phillipa Gregory's "Cousins' War" series, and in the TV adaptation of the novels, "The White Queen". From 1483 to 1484, Edward used the arms of his father, debruised with a label of three points Argent. Edward of Middleham, Prince of Wales Edward of Middleham, Prince of Wales, Earl of Chester, Duke of Cornwall, 1st Earl of Salisbury (December 1473 – 9 April 1484), was the heir apparent of King Richard III of England and his wife, Anne Neville. He was Richard's only legitimate child and died aged ten. Edward was allegedly born in December 1473 at Middleham Castle, a stronghold