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 France (1554; at baptism)<br> Reformed (1554-1572; raised Calvinist)<br> Roman Catholic (1572-1576; forced conversion to Roman Catholicism)<br> Reformed (1576-1593; returned to Calvinism)<br> Roman Catholic (1593-1610; converted to Roman Catholicism for coronation) On 18 August 1572, Henry married his second cousin Margaret of Valois; their childless marriage was annulled in 1599. His subsequent marriage to Marie de' Medici on 17 December 1600 produced six children: The arms of Henry IV changed throughout his lifetime: Henry IV of France Henry IV (, read as ; 13 December 1553 – 14 May 1610), also known by the epithet Good King Henry or Henry the Great,