Henry IV (15 April 1367 - 20 March 1413), also known as Henry of Bolingbroke, was King of England and Lord of Ireland from 1399 to 1413, and asserted the claim of his grandfather, Edward III, to the Kingdom of France. Henry was born at Bolingbroke Castle in Lincolnshire. His father, John of Gaunt, was the fourth son of Edward III and the third son to survive to adulthood, and enjoyed a position of considerable influence during much of the reign of Henry's cousin Richard II, whom Henry eventually deposed. Henry's mother was Blanche, heiress to the considerable Lancaster estates, and thus he became the first King of England from the Lancaster branch of the Plantagenets and the first King of England since the Norman Conquest whose mother tongue was English rather than French.