Author
- Guillaume de Mandagout2
- Hai Gaon2
- Henry VIII of England2
- Henry of Langenstein2
- Henry of Segusio2
- Immanuel Bonfils2
- Innocent V2
- Jacob Anatoli2
- Jacobus de Cessolis2
- Jacques Legrand2
- James of Milan2
- Jean de Meun2
- Joan Martines2
- Joannes Oliva2
- Johannes de Sacrobosco2
- John Burgh2
- John Felton2
- John of Genoa2
- John of Wales2
- Juana I of Castile2