Author
- John Burgh1
- John Capgrave1
- John Gower1
- John Mandeville1
- John XXII1
- John of Genoa1
- John, Duke of Berry1
- Joseph Angelet1
- Joseph ben Abraham Gikatilla1
- Judah ben Saul ibn Tibbon1
- Laurent d'Orleans1
- Leon Battista Alberti1
- Leonardo Mainardi1
- Louis XII of France1
- Luis Velasco1
- Malavolti family1
- Martin V1
- Matthew Paris1
- Medingen Abbey1
- Michele Zopello1