Author
- Gregory XI1
- Gregory XIII1
- Gregory XIV1
- Gregory de Chastellar1
- Guido di Biagio di Carlo Piccolomini1
- Guillaume Tardif1
- Guillaume de Lanicia1
- Guillaume de Salins1
- Guillelmus Gilaberti de Olivariis1
- Hanns Schwartz1
- Hari Dīkṣita1
- Harivallabha1
- Hatefi1
- Heinrich Stegmüller1
- House of Blois1
- House of Borgia1
- House of Gondi1
- House of Ventimiglia1
- House of della Rovere1
- Ibrāhīm al-Ḥusaynī1