In 1362, John of Gaunt, fourth son of Edward III, inherited the castle and had the gatehouse converted into a keep. His son, Henry of Bolingbroke, inherited the castle in 1399 and subsequently usurped the throne as Henry IV. Dunstanburgh became a royal castle and a Lancastrian stronghold during the War of the Roses. Its Lancastrian commander was Sir Ralph Percy.
A castle as imposing as this has a history of hauntings. One spirit that supposedly walks the grounds is that of Thomas, the first Earl. It is said his beheading in Pontefract took 11 blows of the axe and his headless ghost wanders near to
with the head tucked under its arm and a look of agony on its face. Lilburn Tower