Most of the surviving building work dates from the 12th century, although the site of Prudhoe Castle has strong Norman origins. As a great fortress, a baronial home, and a powerful administrative centre, Prudhoe has played many active roles throughout its history. Situated in the Tyne valley in Northumberland, it was inevitably involved in the border wars between Scotland and England, and was subjected to siege at various times.
Although continuing to be inhabited during the 17th century, Prudhoe Castle had become largely ruinous by that time, and some 100 years later it started to collapse. At the beginning of the 19th century, the 2nd Duke of Northumberland carried out essential repairs to the tower and walls, but most of the ruins were cleared at this time. Further repair work was effected in 1912. Prudhoe Castle came into the possession of the notorious Percy family in 1398 and, despite several periods of forfeiture over a 200 year period, it is still owned today by the Duke of Northumberland, a direct descendant of the mighty Northumberland baron, Sir Henry Percy.
info taken from The English Heriatge Trail.