Ælfhelm of York exception is the will of his brother, Wulfric Spot. According to a 12th-century tradition, Ælfhelm was murdered and his sons blinded in 1006, by Eadric Streona with the connivance of King (Æthelred II). Ælfhelm's daughter, Ælfgifu, married Cnut the Great, King of England between 1016 and 1035, as a result of which Ælfhelm became the grandfather of future English king Harold Harefoot. Ælfhelm was a Mercian, son of Wulfrun, a rich noblewoman who founded Burton Abbey. His father is unknown, but it is thought that he was of lower rank than Wulfrun as Wulfric Spot, Ælfhelm's brother, is called "Wulfric
Issue of Edward III of England by his third cousin Edward, 4th Duke of York of the York faction (great-grandson of Edmund of Langley, 1st Duke of York, 5th son of King Edward III), who reigned as King Edward IV. The Lancaster kings also had Plantagenet ancestry on the female side from Blanche of Lancaster, wife of John Gaunt, daughter of Henry of Grosmont, 1st Duke of Lancaster (c.1310-1361), descended from Edmund Crouchback, 1st Earl of Lancaster, the second son of King Henry III (1216-1272), the great-grandfather of King Edward III. A legend was developed, although without foundation, claiming that Edmund Crouchback was older than his