Battle of Stamford Bridge: English army under King Harold II defeat invading Norwegians led by King Harald Hardrada and Harold's brother Tostig, who were both killed.
Neptune was first observed by Johann Galle. The presence of which had previously been mathematically predicted by Cornishman John Couch Adams who was interested in the irregularities in the motion... ...
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...
Germany invaded Poland, effectively starting WWII. Though it really became inevitable from around 1933 by the inaction of the west. Britain and France were infected with a Liberal pacifist desire for...