Author
- Johannes von Kastl1
- Johannis Hieronymus1
- John Burgh1
- John Capgrave1
- John Cleseby1
- John Felton1
- John Halgren of Abbeville1
- John II of Castile1
- John Shirley1
- John Tiptoft, 1st Earl of Worcester1
- John Versor1
- John Wycliffe1
- John XXI1
- John Zonaras1
- John of Glastonbury1
- John of Lancaster, 1st Duke of Bedford1
- John of Seville ?1
- John of Wales1
- John, Duke of Berry1
- Joseph Haslewood1