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, Burgrave of Plauen inheritance was agreed with the Lords Reuss of Plauen at Greiz about who would inherit Gera in case the Lord of Gera would die childless. On 7 August 1550, Henry of Gera died childless at Castle Burgk, and Henry IV inherited his fief. From that point, Henry IV, in fact owned all of the Vogtland, the fief that King Ferdinand had assigned to him. His whole life, Henry IV had to defend himself in quarrels with his half brother Henry the Bastard and after the end of the Schmalkaldic War, he had to deal with litigation by the Reuss family,