Henry IV, the exiled duke who deposed Richard II in 1399, spent his reign defending a usurped crown against Percys, Welsh rebels, and Scots, and died worn out at forty-five, leaving a secured throne to Henry V.
Henry Bolingbroke was the most accomplished knight of his generation — crusader in Prussia, pilgrim to Jerusalem, famous in the lists — before Richard II's confiscation of his inheritance forced the choice between beggary and usurpation. He landed with a handful of men in July 1399 and was king by October.
The crown taken by force had to be held by force: the Percys' rebellions (Shrewsbury, 1403), Owain Glyndŵr's decade-long Welsh war, the archbishop of York executed for treason in 1405 — and then illness, penury, and a restless heir. He kept the throne, which was the whole task, and passed it whole to his son.
Henry was born at Bolingbroke in 1367, heir to the greatest private inheritance in England — the duchy of Lancaster of his father John of Gaunt. He and his cousin Richard II, born the same year, were knighted together as boys; the parallel lives diverged from there.
As earl of Derby he was one of the five Lords Appellant who broke Richard's court party in 1387–88, then prudently spent the 1390s abroad: two reisen with the Teutonic Knights against Lithuania, and a grand pilgrimage through Venice to Jerusalem that made him the most travelled English royal of the age. Exiled in 1398 on a pretext, he watched Richard seize the whole Lancastrian inheritance on Gaunt's death in 1399 — and returned.
Before 1399 the record is of a paragon: courteous, cultivated, musical (he travelled with his own chapel), a champion jouster, and conspicuously pious in the crusading-chivalric mode. Foreign courts from Königsberg to Milan feted him; even chroniclers hostile to his later kingship remembered the exile's departure as a popular tragedy.
Kingship revealed the other side: a suspicious, calculating survivor who broke the Percys who had made him, executed an archbishop against all counsel, and answered parliament's endless criticism of his household with patience, evasion, and necessity. The long humiliating illness after 1405 — read by his enemies as God's verdict for Scrope's blood — he bore, by all accounts, with grim penitential endurance, planning to the last a crusade he would never make.
The usurpation was smooth; keeping the crown was war without end. Wales rose under Owain Glyndŵr in 1400 and burned English rule back to the castles for a decade. The Percys — Northumberland, Worcester, and Hotspur — who had carried Henry to the throne turned on him in 1403, and only the desperate victory at Shrewsbury, where Hotspur died and the Prince of Wales took an arrow in the face, saved the dynasty. Scrope's rising followed in 1405, and the archbishop's execution shocked even Henry's friends; Northumberland's last throw ended at Bramham Moor in 1408.
Through it all ran poverty and parliament: the Commons attached conditions, named councillors, and audited the household of a king who had promised in 1399 to "live of his own". From 1406 his health collapsed, and the last years were a muffled struggle between the ailing king and the ambitious Prince of Wales, whose partisans openly discussed abdication. Henry kept the crown to his final breath — reportedly telling the prince, who had lifted it from the pillow prematurely, that God alone knew what right either of them had to it.
Henry collapsed while praying at the Confessor's shrine in Westminster Abbey on 20 March 1413 and was carried into the abbot's Jerusalem Chamber, where he died — fulfilling, as every chronicler observed, the prophecy that he would die in Jerusalem, which he had understood as a crusader's death.
He chose burial not at Westminster among the kings but at Canterbury, beside the shrine of St Thomas Becket — the martyr of royal overreach — a placement historians still read as the usurper's last plea for legitimacy and pardon.
Henry proved a usurpation could be made to stick: fourteen years of rebellion, penury, and parliamentary siege ended in the first peaceful succession from father to son in England since 1327. Everything Henry V achieved was built on that unglamorous survival.
But the title deed of 1399 could never be unwritten. The Lancastrian claim rested on parliament's acceptance of a fait accompli, and when Lancastrian kingship faltered under his grandson Henry VI, the house of York needed only to reread the precedent. The long shadow of Bolingbroke's landing reached to Bosworth.