Author
- Homer1
- House of Borgia1
- Hugh of Saint Victor1
- Iacopo Bracciolini1
- Innocent XI1
- Ippolito Libri1
- Isidore of Seville1
- Jabir ibn Hayyan1
- Jacobus de Burgo1
- Jacobus de Voragine1
- Jacomo Veronese1
- Jacopone da Todi1
- Jean de Roquetaillade1
- Jewish Community of Pitigliano, Italy1
- Joannes Francis Binus1
- Joannes Oliva1
- Johannes Paulus1
- John Chrysostom1
- John Dominici1
- John Mandeville1