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Centuries: 11th century - 12th century - 13th century Decades: 1120s 1130s 1140s 1150s 1160s - 1170s - 1180s 1190s 1200s 1210s 1220s Years: 1174 1175 1176 1177 1178 - 1179 - 1180 1181 1182 1183 1184 Events Third Council of the Lateran condemned Waldensians and Cathars as heretics; reformation of clerical life Births Snorri Sturlusson (Icelandic historian and author of the Younger Edda) Deaths
Decades: 1120s 1130s 1140s 1150s 1160s - 1170s - 1180s 1190s 1200s 1210s 1220s
Years: 1174 1175 1176 1177 1178 - 1179 - 1180 1181 1182 1183 1184
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Deaths