Author
- Hugh Bigod, 3rd Earl of Norfolk1
- Hugh of Fouilloy1
- Hugh of Saint Victor1
- Ildibrandinus1
- Innocent IV1
- Isidore of Seville1
- Jacobus de Voragine1
- Johannes de Sacrobosco1
- John Chrysostom1
- John de Breton1
- John de Seccheville1
- Justinian I1
- Leo Archpriest1
- Oglerio di Lucedio1
- Peter Paludanus1
- Peter of Limoges1
- Petrus Riga1
- Piccolomini1
- Piccolomo Oltremonti1
- Podestà of Monticchiello (Italy)1