Henry IV of England 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 to adulthood) of King Edward III and enjoyed a position of considerable influence during much of the reign of
Henry IV the Faithful Oleśnica and Namysłów. In 1322 the sons of Henry III joined the coalition of the Silesian Dukes (Bernard II of Świdnica, Henry VI the Good, Bolesław III the Generous), whose head was Władysław I the Elbow-high, now King of Poland. This action weakened even more the power of the Dukes of Głogów, who at the end also lost Namysłów. One year later, in order to avoid the intervention of Emperor Louis IV, Henry IV put his Duchy under the protection of the Holy See. On 29 July 1326 Henry IV concluded a treaty with his brothers Jan of Ścinawa and