The first episode of Star Trek was aired on US TV. Did you know? Kirk was not in the pilot, the Capt was Christopher Pike, played by Jeffrey Hunter, also famous for playing Jesus in King of Kings...
The swallow sidecar company was founded by William Lyons. After WWII their logo looked a bit too much like SS. Thus they renamed themselves after one of their models, Jaguar. Thus was the Jaaaag Born....
The son of Henry II and Eleanor of Aquitaine, Richard I (The Lion Heart) was crowned in Westminster. Ironically he spent a grand total of 6 months in England!
The Julian calendar was replaced by the Gregorian Calendar. Pope Gregory XIII had calculated that we were in fact wrong with having a leap year every 4 years and instead proposed that adding a day...