John Holland, 1st Duke of Exeter John Holland, 1st Duke of Exeter John Holland, 1st Duke of Exeter (c. 1352 – 16 January 1400) also 1st Earl of Huntingdon, was an English nobleman, a half-brother of King Richard II (1377–1399), to whom he remained strongly loyal. He is primarily remembered for being suspected of assisting in the downfall of King Richard's uncle Thomas of Woodstock, 1st Duke of Gloucester (1355–1397) (youngest son of King Edward III) and then for conspiring against King Richard's first cousin and eventual deposer, Henry Bolingbroke, later King Henry IV (1399–1413). He was the third son of Thomas Holland, 1st Earl of
Pontefract third siege, Pontefract inhabitants, fearing a fourth, petitioned Parliament for the castle to be slighted. In their view, the castle was a magnet for trouble, and in April 1649 demolition began. the ruins of the castle remain and are publicly accessible. Pontefract was the site of Pontefract Priory, a Cluniac priory founded in 1090 by Robert de Lacy dedicated to St John the Evangelist. The priory was dissolved by royal authority in 1539. The abbey maintained the Chartularies of St John, a collection of historic documents later discovered among family papers by Thomas Levett, the High Sheriff of Rutland and