John Wastell
John Wastell (c. 1460 – c.1518) was an English gothic architect and master mason responsible for the fan vaulted ceiling and other features of King's College Chapel, Cambridge, the crossing tower (Bell Harry Tower) of Canterbury Cathedral, and sections of Peterborough Cathedral. He also worked on Bury St Edmunds Abbey. In addition he contributed to a number of churches in East Anglia, including St Mary's, Saffron Walden.
The choir of Manchester Cathedral has been attributed to him, but this suggestion is dismissed by biographer Francis Woodman; Pevsner's guide suggests it was the work of masons associated with his workshop.