Author
- Giordano Ruffo1
- Giovanni Battista Grimaldi1
- Giovanni d'Andrea1
- Girolamo di Domenico Vanni1
- Gisberto Orlandi1
- Gratian1
- Guglielmo Perlano1
- Guillaume Durand1
- Hugh Ripelin of Strasburg1
- Hugh of Balma1
- Hugh of Saint Victor1
- Innocent III1
- Isidore of Seville1
- Jacob Saphir1
- Jacques de Vitry1
- Jewish Community of Pitigliano, Italy1
- Jewish community of unidentified city, Italy1
- John Chrysostom1
- John XXII1
- John de Breton1