(c.1270-1308) Founder and leader of the Scotist School of philosophy, died Cologne, Germany. It is not known whether he was of Irish or Scottish origin or whether Duns was a family or a place name. He became a Franciscan, c.1290,taught at Oxford, and distinguished himself for his learning at the universities of Paris and Cologne. Of his numerous works the principal is his commentary on the "Sentences" of Peter Lombard, from which nearly his whole system of philosophy, in which the genuine spirit of scholasticism is pronounced, can be derived. His chief followers were among the Franciscans. He was called "Doctor subtilis."