Edward of Middleham, Prince of Wales, Earl of Chester, Duke of Cornwall, 1st Earl of Salisbury , was the only child of King Richard III of England and his queen consort, Anne Neville. He was Richards only legitimate child and died aged ten.
Edward was allegedly born in December 1473 at Middleham Castle, a stronghold close to York that became Richard and Annes principal base in northern England. The date of 1473 is, however, not universally accepted Professor Charles Ross wrote that the date 1473 lacks authority. In fact, he was probably not born until 1476. The act of Parliament that settled the dispute between George of Clarence and Richard over Anne Beauchamps inheritance just as if the Countess of Warwick was naturally dead was dated May 1474. The doubts cast by Clarence on the validity of Richard and Annes marriage were addressed by a clause protecting their rights in the event they were divorced and then legally remarried to each other, and also protected Richards rights while waiting for such a valid second marriage with Anne. There were no provisions, however, for their heirs in case of this said divorce, which seems to confirm Richard and Anne had no children as of 1474. But such provision was the provence of the
Source: Wikipedia