- Mar 8 Bajezid I Jildirim, 4th sultan of Turkey (1389-1403), dies at 42
- May 10 Katherine Swynford, English Duchess of Lancaster, lover then wife of John of Gaunt, dies at 52 or 53
- Jul 21 Henry Percy [Harry Hotspur], English Knight, killed at the Battle of Shrewsbury at 39
- Jul 23 Thomas Percy, 1st Earl of Worcester, English rebel (executed) (b. 1343)
Assassination
Car Crash
Hanging
Killed in Action
Plane Crash
Poisoning