Major Events
- Jan 20 According to legend, freeholder Lalli slays English crusader Bishop Henry with an axe on the ice of Lake Köyliönjärvi in Finland
- May 28 Battle at Brindisi: Norman-Sicillian King William beats Byzantine fleet under John Doukas and Alexios Bryennios
- Jul 11 Siege of Shirakawa-den in Japan
- Sep 8 Henry II, Duke of Austria leaves Bavaria
- Sep 17 Emperor Frederick I Barbarossa issues the 'Privilegium Minus' decree, which elevated Austria to a duchy
Born in 1156
- Oct 27 Raymond VI, Count of Toulouse (1194-1222), born in Saint-Gilles, Gard, France (d. 1222)
Who Died in 1156
- Jan 20 Bishop Henry, patron saint of Finland
- Jan 31 Herman van Horn, Dutch catholic clergyman (Bishop of Utrecht, 1150-56), dies [age undocumented]
- Jul 20 Emperor Toba of Japan (b. 1103)
- Dec 25 Peter the Venerable, French theologist, 9th abbot of Cluny, dies at about 61
Famous Weddings in 1156
- Jun 9 Holy Roman Emperor Frederick I Barbarossa marries Beatrice of Burgundy, daughter and heiress of Renaud III at Würzburg
Gregory I
Gregory XIII
Julius II
Julius III
Leo X
Pius V