Author
- Hugh of Saint Victor1
- Hugh of Saint-Cher1
- Humphrey Wellys1
- Iachetus Italianus1
- Iacopo Bracciolini1
- Iacopo da Benevento1
- Ildibrandinus1
- Imbert Feutrier1
- Immanuel Tremellius1
- Innocent III1
- Isidore of Seville1
- Jacobo Bellenden1
- Jacobus Balbi1
- Jacobus Dinetus1
- Jacobus de Voragine1
- Jacopo Nannis de Piccolomini1
- Jacopo Ragone1
- Jean Carteron1
- Jean de Malian1
- Joachim Bendel1