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
Ferdinand IV, King of the Romans he shared the role with his father Emperor Ferdinand III. He was crowned on 5 August 1646, and also shared the role of Duke of Cieszyn with Ferdinand III. Ferdinand IV also shared the role as King of Hungary and Croatia with his father; his coronation took place on 16 June 1647 in Pressburg, present-day Slovakia. After the French attempted to modify the system of the election of King of the Romans, Emperor Ferdinand III made an opportunity of a recent decline in the prestige of France, and was able to install Ferdinand IV as King of the Romans, and