Author
- Jacques Legrand2
- James of Milan2
- Jean de Meun2
- Johannes de Sacrobosco2
- John Burgh2
- John Felton2
- John of Genoa2
- John of Wales2
- Josephus2
- Julian of Toledo2
- Justin2
- Laurent d'Orleans2
- Leo Archpriest2
- Leonardo Loredan2
- Luke the Evangelist2
- Maurice de Sully2
- Nicholas Trivet2
- Oglerio di Lucedio2
- Origen2
- Pietro Candido Decembrio2