Author
- Haimo of Auxerre1
- Haly Abenragel1
- Heinrich IV. von Württemberg1
- Heinrich Stegmüller1
- Henry of Langenstein1
- House of Blois1
- Ildibrandinus1
- Immanuel Bonfils1
- Innocent IV1
- Isaac Israeli ben Joseph1
- Isaac Israeli ben Solomon1
- Isidore of Seville1
- Ivo of Chartres1
- Jacobus Balbi1
- Jacopo Nannis de Piccolomini1
- Jacopo Piccolomini-Ammannati1
- Jacques Lempereur1
- Jean Carteron1
- Jean Gerson1
- Jean Marot1