Under Abbot Edward Knowle (1306–1332), a major rebuilding of the Abbey church began despite financial problems. Between 1298 and 1332 the eastern part of the abbey church was rebuilt in the English Decorated Gothic style. He also rebuilt the cloisters, the canons' dining room, the King's Hall and the King's Chamber. The Black Death is likely to have affected the monastery and when William Coke became abbot in 1353 he obtained a papal bull from Pope Urban V to allow him to ordain priests at a younger age to replace those who had died. Soon after the election of his successor, Henry Shellingford, in 1365 Edward III took control of the monastery and made The 4th Baron Berkeley its commissioner to resolve the financial problems. In the late 14th and early 15th centuries Abbots Cernay and Daubeney restored the fortunes of the order, partly by obtaining the perpetual vicarage of several local parishes. These difficulties meant that little building work had been undertaken for nearly 100 years. However, in the mid-15th century, the number of Canons increased and the transept and central tower were constructed. Abbot John Newland, (1481–1515), also known as 'Nailheart' due to his rebus of a heart pierced by three nails, began the rebuilding of the nave, but it was incomplete at the Dissolution of the Monasteries in 1539. Newland also rebuilt the cloisters, the upper part of the Gatehouse, the canons' dormitory and dining room, and the Prior's Lodging (parts of which remained until 1884 as they were built into Minster House).