Author
- Magister Contarinus1
- Marbodius of Rennes1
- Marcantonio Aldegati1
- Marcus Manilius1
- Martin V1
- Matteo Palmieri1
- Matteo Piccolomini1
- Matthaeus Platearius1
- Monastery of San Andrés de Fanlo1
- Niccolò Balsamo1
- Nicoluccio di Ascoli1
- Nikolaos Sagundino1
- Nikolaus von Dinkelsbühl1
- Notre-Dame de Chartres1
- Odo of Meung1
- Onasander1
- Origen1
- Osbern of Gloucester1
- Otto III1
- Paschal II1