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 Sayn Henry IV of Sayn Henry IV of Sayn (), Lord of Homburg, Montclair and Meinsberg (1539 – 17 January 1606) was the last Count of Sayn-Sayn and the last male heir of the Sayn-Sponheim family. Henry was born in 1539, the middle one of the three sons of Count John V of Sayn and Elisabeth of Holstein-Schauenburg, and became a clergyman at the request of his father. Initially a canon ("Domherr"), from 1565 he became cathedral dean ("Domdechant") of Cologne under Archbishops Frederick IV of Wied and Salentin of Isenburg. After the death of his uncle, Count Sebastian II who