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
Pilgrimage of Grace
Pilgrimage of Grace
Prudhoe Castle