Jan Van der Weyden, Latinized Johannes de Pascuis, was a monk of the Cistercian Abbey of Dunes in the County of Flanders who studied at the University of Paris, graduating Licentiate of Sacred Theology in 1456.[1] After his studies he returned to Flanders with two precious manuscripts – Expositio Origenis in Matheum (a 13th-century Latin version of Origen's Commentary on the Gospel of Matthew) and Policraticus Iohannis Salabriensis de nugis curialium (a 14th-century manuscript of John of Salisbury's Policraticus) – both of which are now in Bruges City Library.[2] [3]