MS 148 is a copy of a reforming text by Pope Benedict XII, known as 'Constituta totius Ordinis canonicorum regularium Ordinis S. Augustini'. Benedict XII became pope in 1334, and occupied the role until his death in 1342. Pope during the'Avignon papacy' period, Benedict was the third pope to rule from Avignon (in France), rather than Rome. Pope Benedict was a former Cistercian abbot, and was known for his religious strictness and austerity. When he became pope, he turned his attention to drafting reforms and cleaning up the monastic orders. A papal bull was the first part of this endeavour, published in 1335. This was followed by constitutions for the Cistercian and then Benedictine orders. In mid-May 1339, a text for the Augustinian order was issued, contained here in MS 148.

The text begins on f. 1 with the words Incipiunt Constitutiones sive statuta canonicorum regularium, and ends on f. 23v with Datum Avinionem Idus Maii Pont. nostri anno quarto Expliciunt constitutiones canonicorum regularium.

A good English hand, with rubrics and blue and red filigree initials, soiled in parts, but complete.