The Abbey owned a huge area of land and was clearly a very important religious house in medieval times. In 1341 King Edward III (founder of the Order of the Garter) visited; and in 1471 King Henry VI was buried in the Abbey following his death at the Tower of London (Henry VII had him reinterred at Windsor).
The Dissolution of the Monasteries
King Henry VIII (reigned 1509-1547) wished to divorce his first wife, Catherine of Aragon, who had failed to give him a male heir, in order to marry Anne Boleyn with whom he had become infatuated.
Many of the monasteries had maintained libraries full of priceless illuminated manuscripts, but sadly many of these were destroyed, with little or no regard for their value.
Happily some illuminated manuscripts did survive including a manuscript created in the 14th C. at Chertsey, known as the Chertsey Breviary, and it is held at the Bodleian Library (see Oxford below). Click here for more information: Chertsey Breviary.
The Chertsey manuscript shown here is from the British Library Collection - Click the image for a larger version.