(fl. 1319–d. 1354). English carpenter. He was involved in a consultancy capacity at Ely Cathedral, Cambs., in 1323–4, where he designed the octagon over the crossing, making him one of the most outstanding inventors of structure of the medieval period. He was also an accomplished designer of stalls: his works at Windsor and St Stephen's Chapel, Westminster, have not survived, but the stalls at Ely still exist. He was also active at the Tower of London (1324), Caerphilly Castle, Wales, and Guildhall, London (where he was in charge of the works until its completion in 1337). He may also have designed the roof of the Great Hall at Penshurst Place, Kent (1341–9).
From A Dictionary of Architecture and Landscape Architecture in Oxford Reference.