What Happened in 1171
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- Aug 15 Alfonso IX, King of León and Galicia (1188-1230), born in Zamora (d. 1230)
- Feb 20 Conan IV, Duke of Brittany (b. 1138)
- May 1 Dermot MacMurrough, last Irish King of Leinster, dies
- Jun 9 Jacob Ben Meir [Rabbenu Tam], French Tosofist, dies
- Aug 11 Louis I, Earl of Wage/Rieneck, dies
- Nov 2 Dionysius [Jacob] Bar-Salibi, Syriac Orthodox Church author (Diarbekir), dies
More 1171 Deaths
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List of Years