1179

Events

• Third Council of the Lateran condemned Waldensians and Cathars as heretics; reformation of clerical life
• Portugal and it's king are recognized by the Holy See as kingdom and king, respectably. It is stated that from now on that Portugal is under the protection of the Holy See and God.

Births

• Snorri Sturlusson (Icelandic historian and author of the Younger Edda)

Deaths

• September 17 - Hildegard von Bingen, German abbess, monastic leader, mystic, author, and composer of music. (* 1098)

Heads of states

• England - Henry II Curt Mantle, King of England (reigned 1154 - 1189).
• France - Louis VII, King of France (reigned 1137 - 1180).