This 13th century Franciscan monk and scholar taught at Oxford and Paris, and is famous for his research into optics
He also studied alchemy and languages
He was censured and finally imprisoned by his own order for his scientific teachings
26 September, 672
Synod of Hertford
The Synod of Hertford was a church gathering that proclaimed the supremacy of the see of Canterbury in the English church. The Archbishop of Canterbury was given the power to divide dioceses and to create new bishops.