Lindisfarnes's position in the North Sea made it vulnerable to attack from Scots and Norsemen, and by Tudor times it was clear there was a need for a stronger fortification. This resulted in the creation of the fort on Beblowe Crag which between 1570 and 1572 formed the basis of the present castle. After Henry VIII had dissolved the priory, his troops used the remains as a naval store. Later, Elizabeth I had work carried out on the fort, strengthening it and providing gun platforms for the new developments in artillery technology. When James I came to power, he combined the Scottish and English thrones, and the need for the castle declined. At this time the castle was still garrisoned from Berwick and protected the small Lindisfarne Harbour.

see "Holy Island" on Glenn Gibson's website