Author
- Haly Abenragel1
- Heinrich IV. von Württemberg1
- Heinrich Stegmüller1
- Heinrich von Friemar1
- Henry Suso1
- Henry of Langenstein1
- House of Borgia1
- House of Ventimiglia1
- House of della Rovere1
- Ildibrandinus1
- Imbert Feutrier1
- Innocent IV1
- Isaac Israeli ben Solomon1
- Isidore of Seville1
- Ivo of Chartres1
- Jacobus Balbi1
- Jacobus Dinetus1
- Jacopo Nannis de Piccolomini1
- Jacopo Ragone1
- Jean Carteron1