Henry IV of England her marriage to the King of England was childless. By an unknown mistress, Henry IV had one illegitimate child: Henry IV of England Henry IV (15 April 1367 – 20 March 1413), also known as Henry Bolingbroke (), was King of England from 1399 to 1413, and asserted the claim of his grandfather, Edward III (himself a maternal grandson of Philip IV of France), to the Kingdom of France. Henry was born at Bolingbroke Castle in Lincolnshire. His father, John of Gaunt (1340-1399) (created 1st Duke of Lancaster in right of his wife), was the fourth son (third to survive
Edward IV of England been looking for a way to trouble Edward IV by reinvigorating the Lancastrian claim to the throne of England. Warwick made an accord with Louis XI and Queen Margaret in which he agreed to restore Henry VI in return for French support for a military invasion of England. Warwick's invasion fleet set sail from France for England on 9 September 1470. This time, Edward IV was forced to flee to Flanders when he learned that Warwick's brother John Neville, 1st Marquess of Montagu, had also switched to the Lancastrian side, making Edward's military position untenable. Henry VI was briefly restored