 As with many of his contemporaries, we know very few dates with certainty in the life of Peter Auriol (a.k.a. Peter Auriole, Peter Aureol, Petrus Aureoli, the Doctor Facundus). On the basis of his later career it seems reasonable to suppose that Auriol was born around 1280, and we have evidence that he originated in the region near the city of Cahors in France. We know that Auriol joined the Franciscan order in the order’s province of Aquitania, and we surmise that this took place sometime before 1300. From the structure of the contemporary Franciscan educational system we can deduce that he studied in Paris sometime in the first decade of the fourteenth century, but evidence that some scholars have presented that Auriol heard Scotus in Paris or was definitely in Paris in 1304 is inconclusive. Auriol’s first written work, dealing with the issue of Franciscan poverty (Tractatus de paupertate et usu paupere), seems to have been composed in 1311 or at latest early 1312. In the latter year we know that Auriol was teaching in Bologna, presumably at the Franciscan convent in that city. It was here that he authored his Tractatus de principiis naturae (Treatise on the principles of nature), his only non-theological work. By the end of 1314, Auriol was in Toulouse, again apparently teaching at the Franciscan convent, and it seems that the two treatises that he authored in support of the Immaculate Conception of the Virgin Mary (and in opposition to Dominican critics of that view) stem from this time (Tractatus de conceptione Beatae Mariae Virginis and Repercussorium). In one or both of these cities, Auriol must have also been lecturing on the standard medieval theological textbook, the Sentences of Peter Lombard, and his massive commentary on the first book of the Sentences, his Scriptum super primum Sententiarum — more than 1100 folio pages in its early modern printing (Rome 1596) — was almost certainly substantially finished by the autumn of 1316 when Auriol arrived in Paris, sent by the Franciscan order to earn his doctorate. We used to think that Auriol read the Sentences at Paris 1316–18, but new research has shown that he did this there over the sole academic year 1317-18 (Duba and Schabel 2017, esp. pp. 159-165). No less a figure than Pope John XXII, Auriol’s mentor, wrote to the Chancellor of Paris in a letter dated July 14, 1318, asking that Auriol be granted the doctorate. The letter served its purpose, and by late 1318 he was the Franciscan regent master in theology there. Auriol served as regent master in Paris until 1320 or 1321, lecturing on the Bible (from which resulted several extant biblical commentaries), and holding at least one series of quodlibetal disputations. In 1321, he was elevated by John XXII to the position of Archbishop of Aix-en-Provence, but Auriol died soon after taking office, probably on January 22, 1322. (See, for more details, Teetaert 1935, and esp. Buytaert 1952).