• The Lombard League defeats Holy Roman Emperor Frederick I near Legano, effectively ending Frederick's attempt to add Lombardy to his empire.
• The Seljuk Turks under Kilij Arslan II strengthen their hold on Asia Minor by crushing Byzantine forces under Emperor Manuel I at the Battle of Myriokephalon.
• Peter Waldo, a wealthy Lyons merchant, gives away all his property and begins preaching apostolic poverty as the road to salvation, thus beginning the Waldensian heresy.
• Chrétien de Troyes writes the second of his great Arthurian Romances, Cligés.
• Welsh King Rhys ap Gruffydd holds the first recorded eisteddfod (Welsh competitive festival) at Cardigan, beginning a Welsh tradition that continues to this day.
• Construction begins on a new stone London Bridge to replace the old wooden version.

These people were born in 1176:

• Hindu guru Shri Jinchandra Suriji, revered by Hindus, Muslims, and Jains alike, better known to his disciples as Dadagurudev.
• Serbian prince Rastko Nemanjic, the first archbishop of the Serbian Orthodox Church, later cannonized as Saint Sava.
• Philip of Swabia, future king of Germany (approximate).
• Leopold VI "the Glorious," future king of Austria.
• Andras II, future king of Hungary.
• Pedro II, future king of Aragon.
• Henry de Bohun, first Earl of Hereford, one of the English noblemen who forced King John I to sign the Magna Carta.

These people died in 1176:

• Retired Japanese emperor Rokujo, at the tender age of 11.
• Rosamond Clifford, mistress to King Henry II of England, allegedly murdered by his jealous wife Eleanor of Aquitaine
• Richard de Clare, second Earl of Pembroke, better known to history as Richard Strongbow, a Norman nobleman who battled in Ireland on behalf of Dermot McMurrough, king of Leinster in his dispute against Rory O'Connor, king of Connacht, and wound up capturing much of Ireland for the English crown.

1175 - 1176 - 1177

12th century