The Percies
The Percies added a new great hall to the castle shortly after they took possession of it. Henry Percy, 1st Earl of Northumberland fought against Henry IV and took part in the Battle of Shrewsbury, for which act he was attainted and his estates, including Prudhoe, were forfeited to the Crown in 1405. That same year it was granted to the future Duke of Bedford, (a son of Henry IV) and stayed in his hands until his death in 1435, whereupon it reverted to the Crown.
The Percies regained ownership of the Prudhoe estates in 1440, after a prolonged legal battle. However, Henry Percy, 3rd Earl of Northumberland fought on the Lancastrian side in the Wars of the Roses and was killed at the Battle of Towton in 1461. In 1462 Edward IV granted Prudhoe to his younger brother George, Duke of Clarence. The latter only possessed the castle briefly before the king granted it to Lord Montague.
The castle was restored to the fourth Earl in 1470. The principal seat of the Percys was Alnwick Castle and Prudhoe was for the most part let out to tenants. In 1528 however Henry Percy 6th Earl was resident at the castle as later was his brother Sir Thomas Percy. Both the Earl and Sir Thomas were heavily involved in the Pilgrimage of Grace in 1536 and both were convicted of treason and executed. Following forfeiture of the estates the castle was reported in August 1537 to have habitable houses and towers within its walls, although they were said to be somewhat decayed and in need of repairs estimated at £20.
The castle was once again restored to Thomas Percy, the 7th Earl in about 1557. He was convicted of taking part in the Rising of the North in 1569. He escaped, but was recaptured and was executed in 1572.
The castle was thereafter let out to many and various tenants and was not used as a residence after the 1660s. In 1776 it was reported to be ruinous.
Between 1808 and 1817, Hugh Percy, 2nd Duke of Northumberland carried out substantial repairs to the ancient fabric and replaced the old dwellings within the walls with a Georgian mansion adjoining the keep.
In 1966 the castle was given over to the Crown and is now in the custody of English Heritage and is open to the public.
Read more about this topic: Prudhoe Castle