New College, Oxford two black chevrons, one said to have been added when he became a bishop and the other representing his skill with architecture (the chevron was a device used by masons). Winchester College uses the same arms. The grand collection of buildings is a testament to William's experience in administering both ecclesiastical and civil institutions as the Bishop of Winchester and High Chancellor of England. Both Winchester College and New College were originally established for the education of priests, there being a shortage of properly educated clergy after the Black Death. William of Wykeham ordained that there were to be ten
William Wynford granted Wynford a pension of £10 per annum. In 1375–76 he was at work at Abingdon Abbey and working for the crown at Corfe Castle in 1377–78 making new rooms in the keep. In 1378 Wynford was working with Henry Yevele at Southampton. With the death of Edward III the new king Richard II of England favoured Wykeham, with newfound wealth he founded in 1379 New College, Oxford, which was designed by Wynford, who also designed Winchester College founded by Wykeham in 1382. In 1389-90 he was repairing Winchester Castle, from 1392 he designed Wardour Castle, and in the 1390s