|12th c. image of St. Cuthbert|
In 875, with the threat of Danish Invasion, the monks fled Lindisfarne, taking Cuthbert's remains. The monks and Cuthbert's body wandered for seven years looking for a home. In 883 they were offered a place called Chester-le-Street near Durham, where Cuthbert was re-interred.
In the late 900s, the threat of Danish invasion caused monks to remove the Saint's bones again, carrying them to Ripon over 300 years after he had lived there—but only for a few months. The monks brought the bones back toward Chester-le-Street, but stopped in Durham after having dreams that the saint wished to be interred there. A stone church was built to house the relics. Then came William the Conqueror, campaigning to make sure the north of England feared him, so in 1069 the monks fled with the bones back to Lindisfarne, but shortly after returned to Durham.
William's habit of building massive churches to impress the locals (and perhaps to appease God for William's sins) meant that, by 1104, the bones of Cuthbert could return to Durham to a cathedral that had been built on the site of his original stone church. We are told that it was decided at this time to open the casket they had carted around for so many generations; they discovered two remarkable things. One was that Cuthbert's body had remained uncorrupted (a sign of sanctity). The second thing was a book, now called The Stonyhurst Gospel or St. Cuthbert's Gospel.
*That someone was later St. Wilfrid; among other things, Wilfrid became celebrated for his speech at the Synod of Whitby on why Easter should be calculated using the Roman method, not the Irish method. Cuthbert was raised in the Irish tradition, but accepted the Roman method when it became the rule.