quality:corruption, linguistic:paraphrasing, structural:summarization
Birth and family

Henry was born in the tower above the gatehouse of Monmouth Castle in Mounmouthshire, and for that reason was sometimes called Henry of Monmouth. He was the son of Henry of Bolingbroke (later Henry IV of England) and Mary de Bohun. His father's cousin was the reigning English monarch, King Richard II. Henry's paternal grandfather was the influential John of Gaunt, a son of King Edward III. As he was not close to the line of succession to the throne, Henry's date of birth was not officially documented, and for many years it was disputed whether he was born in 1386 or 1387. However, records indicate that his younger brother Thomas was born in the autumn of 1387 and that his parents were at Monmouth in 1386 but not in 1387. It is now accepted that he was born on 16 September 1386.

Upon the exile of Henry's father in 1398, Richard II took the boy into his own charge and treated him kindly. The young Henry accompanied Richard to Ireland. While in the royal service, he visited Trim Castle in County Meath, the ancient meeting place of the Parliament of Ireland.

In 1399, John of Gaunt died. In the same year, King Richard II was overthrown by the Lancastrian usurpation that brought Henry's father to the throne, and Henry was recalled from Ireland into prominence as heir apparent to the Kingdom of England. He was created Prince of Wales at his father's coronation and Duke of Lancaster on 10 November 1399, the third person to hold the title that year. His other titles were Duke of Cornwall, Earl of Chester and Duke of Aquitaine. A contemporary record notes that in 1399, Henry spent time at The Queen's College, Oxford, under the care of his uncle Henry Beaufort, the chancellor of the university. During this time, due to taking a liking to both literature and music, he learned to read and write in the vernacular; this made him the first English King that was educated in this regard. He even went on to grant pensions to composers due to such love for music.