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
Henry IV of England Rebellions continued throughout the first 10 years of Henry's reign, including the revolt of Owain Glyndŵr, who declared himself Prince of Wales in 1400, and the rebellion of Henry Percy, 1st Earl of Northumberland. The king's success in putting down these rebellions was due partly to the military ability of his eldest son, Henry of Monmouth, who later became king (though the son managed to seize much effective power from his father in 1410). In the last year of Henry's reign, the rebellions picked up speed. "The old fable of a living Richard was revived", notes one account, "and emissaries