The Cathedral was ravaged during the English Civil War when Peterborough, a town with Royalist sympathies, was taken by Colonel Oliver Cromwell. Nearly all the stained glass windows were destroyed and the altar and reredos, cloisters and Lady Chapel were demolished. Much of the Cathedral’s library was destroyed by Cromwell’s troops, by being burnt in the cloisters. The Royalist newsbook ‘Mercurius Aulicus’ describes it thus: ‘It was advertised this day from Peterburgh, that Colonell Cromwell had bestowed a visit on that little City, and put them to the charge of his entertainment, plundering a great part thereof to discharge the reckoning, and further that in pursuance of the thorow Reformation, he did most miserably deface the Cathedrall Church, breake downe the Organs, and destroy the glasse windowes, committing many other outrages on the house of God which were not acted by the Gothes in the sack of Rome, and are most commonly forborn by the Turks when they possesse themselves by force of a Christian city.’ Cromwell spent a month in Peterborough, lodging in the Vineyard at the back of the Cathedral Precincts, allegedly with concussion from having hit his head whilst galloping under a low gateway. Recent archaeological evidence has been found of Cromwell’s troops being camped in the Cathedral grounds.