Pontefract Castle II was captured by Henry Bolingbroke's supporters in August 1399 and initially imprisoned in the Tower of London. Sometime before Christmas that year he was moved to Pontefract Castle (via Knaresborough) where he remained under guard until his death, perhaps on 14 February 1400. William Shakespeare's play Richard III mentions this incident: Various chroniclers suggest that Richard was starved to death by his captors, and others suggest he starved himself. A contemporary French chronicler suggested that Richard II had been hacked to death, but this is, according to the ODNB, "almost certainly fictitious". In 1536, the castle's guardian, Thomas Darcy,
Stirling Castle "inforsyt it grettumly, for riche he was and full mychty" (enforced it greatly, for rich he was and full mighty). In 1360, Robert de Forsyth was appointed governor of Stirling Castle, an office he passed on to his son John and grandson William, who was governor in 1399. Under the early Stewart kings Robert II (reigned 1371–1390) and Robert III (reigned 1390–1406), the earliest surviving parts of the castle were built. Robert Stewart, Earl of Menteith, Regent of Scotland as brother of Robert III, undertook works on the north and south gates. The present north gate is built on these