1173

Events

Canonization of Saint Thomas a Becket, buried at Canterbury
Construction started on the Leaning tower of Pisa in August
Castle at Abergavenny was seized by the Welsh.
Conversion to Christianity of Peter Waldo.
End of Qiandao era and start of Chunxi era of the Chinese ruler Song Xiao Zong
End of reign of Polish ruler Boleslaus IV of Poland and start of reign of Casimir II of Poland
Eleanor of Aquitaine and her sons Richard I of England and Henry the Young King rebelled against her husband, Henry II of England.

Births

Deaths

Richard of St. Victor
Belarussiansian nun Euphrosyne of Polatsk, major contributor to Medieval Belarussian Culture.
Alice, daughter of Italian count Humbert III of Savoy

Heads of states