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 the Faithful the Bohemian King. With the support of King John, Henry IV tried unsuccessfully to claim the succession of the House of Ascania over Brandenburg. In 1331 Przemko II of Głogów died without issue, poisoned by one of his vassals. According to the agreement previously concluded, his Duchy was divided between Henry IV and Jan of Ścinawa. Przemko II's widow only retained the main city of Głogów and Bytom Odrzański. King John of Bohemia, however, had other plans; shortly after, he invaded the Duchy, depriving the widow and brothers of their inheritance. In order to validate this action, the King purchased