In 664, the abbey was built on the east cliff overlooking the Esk and town of Whitby, was the site of the Synod of Whitby, at which the Northumbrian Celtic church was reconciled to Rome. In 867, Whitby Abbey fell to Viking attack, and was abandoned until 1078, when it was re-founded by Regenfrith (Reinferd) a soldier monk, under the orders of his protector, the Norman, William de Percy. The second monastery lasted until it was destroyed by Henry VIII in 1540.