Issue of Edward III of England – 3 February 1399), 1st Duke of Lancaster, fourth son. From the marriage of John of Gaunt and Blanche of Lancaster, daughter and heiress of the Duke of Lancaster, descended legitimate male heirs, the Lancasters (King Henry IV (1399-1413), who as Henry of Bolingbroke in 1399 deposed his first cousin King Richard II (1377-1399), and was followed by his son King Henry V(1413-1422) and the latter's son King Henry VI (1422-1471). This line ended in 1471 when King Henry VI's son Edward of Westminster, Prince of Wales was killed at the Battle of Tewkesbury and when he himself was deposed
Henry VI of England a resistance to Edward, he was captured by Edward's forces in 1465 and imprisoned in the Tower of London. Henry was restored to the throne in 1470, but Edward retook power in 1471, killing Henry's only son and heir in battle and imprisoning Henry once again. Having "lost his wits, his two kingdoms, and his only son", Henry died in the Tower during the night of 21 May, possibly killed on the orders of Edward. Miracles were attributed to Henry after his death, and he was informally regarded as a saint and martyr until the 16th century. He left a