Author
- Guillaume de Salins1
- Hanns Schwartz1
- Heinrich von Friemar1
- House of Blois1
- House of Ventimiglia1
- House of della Rovere1
- Ildibrandinus1
- Innocent IV1
- Jacopo Nannis de Piccolomini1
- Jacques Lempereur1
- Jakob Christoph Blarer von Wartensee1
- Jean Marot1
- Joanna I of Naples1
- Joannes Dominicus de Marchis1
- Johannes Tostius1
- Johannes von Kastl1
- John Eyr1
- John Frederick II of Saxony1
- John of Ibelin1
- John of Lancaster, 1st Duke of Bedford1