Edward IV of England Richard, Duke of Gloucester (later King Richard III of England), were married to Isabel Neville and Anne Neville. Both were daughters of Warwick by Anne Beauchamp and rival heirs to the considerable inheritance of their still-living mother, leading to a dispute between the brothers. In 1478 George was eventually found guilty of plotting against Edward, imprisoned in the Tower of London, and privately executed on 18 February 1478. According to a long-standing tradition, he was "drowned in a butt of Malmsey wine". Edward did not face any further rebellions after his restoration, as the Lancastrian line had virtually been extinguished.
Richard of York, 3rd Duke of York VII, he became an ancestor to all subsequent English monarchs. Richard of York was born on 21 September 1411, the son of Richard, 3rd Earl of Cambridge, by his wife Anne de Mortimer, the daughter of Roger Mortimer, 4th Earl of March. Anne Mortimer was the great-granddaughter of Lionel, Duke of Clarence, the second surviving son of King Edward III (r. 1327–1377). After the death in 1425 of Anne's childless brother Edmund, the 5th Earl of March, this ancestry supplied her son Richard, of the House of York, with a claim to the English throne that was, under English law,