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 V of England formation of a union between the kingdoms of France and England, in the person of King Henry. His sudden and unexpected death in France two years later condemned England to the long and difficult minority of his infant son and successor, who reigned as Henry VI in England and Henry II in France. Henry was born in the tower above the gatehouse of Monmouth Castle in Wales, and for that reason was sometimes called Henry of Monmouth. He was the son of Henry of Bolingbroke (later Henry IV of England) and Mary de Bohun, and thus also the paternal grandson