Author
- Johannes von Kastl1
- Johannis Hieronymus1
- John Burgh1
- John Cornelius1
- John Felton1
- John Versor1
- John XXI1
- John Zonaras1
- Juan de Torquemada1
- Kingdom of England1
- Kingdom of Naples1
- Konrad III. von Soltau1
- Laurentius Cynthius1
- Leonardo Loredan1
- Leonhard Freisleben1
- Lorenzo Pucci1
- Louis Hélian1
- Louis XII of France1
- Ludovicus Bondonus de Branchis1
- Luis Guzmán1