Author
- Marcus Manilius1
- Martin of Braga1
- Martin of Tours1
- Matthaeus Platearius1
- Matthew Paris1
- Matthew of Vendôme1
- Maximus of Turin1
- Medingen Abbey1
- Michele Zopello1
- Monastery of San Andrés de Fanlo1
- Muscio1
- Mutianus Scholasticus1
- Nado de Tolomeo1
- Naldo Naldi1
- Niccolò D'Andrea Piccolomini1
- Nicholas Trivet1
- Nicholas of Gorran1
- Nicholas of Salerno1
- Nicolaccio de' Mignanellis1
- Nikolaos Sagundino1