810Centuries: 8th century - 9th century - 10th century
- October 1 - A man with a sword makes an attempt on emperor Nicephorus I's life. In the following trial, the assassin claims insanity as his defense.
- Emperor Nimmyo of Japan
- Kenneth I, king of Scotland (approximate date)
- Kassia, poet and composer (approximate date)
- Pepin, King of Italy