Editing 1179 (section)

=== By topic ===

==== Religion ====
* March &ndash; [[Third Council of the Lateran]]: The Council condemns [[Waldensians]] and [[Cathars]] as [[Christian heresy|heretics]]. It further institutes a reformation of clerical life and regulates that in order to prevent future [[schism]]s, the pope must receive {{frac|2|3}} of the cardinals' votes to be elected.
* [[September 17]] &ndash; [[Hildegard of Bingen]], German [[abbess]] and [[polymath]], dies at [[Rupertsberg]]. Having founded two monasteries, she has also written theological, botanical, and medicinal texts.
* [[Westminster School]] is founded by [[Benedictines|Benedictine]] monks of [[Westminster Abbey]] (by papal command) in [[Kingdom of England|England]].
* A synod of thirty-three Armenian bishops in [[Hromkla]] discusses the conditions for union with the [[Greek Orthodox Church|Byzantine Church]] and sends a profession of faith to emperor [[Manuel I Komnenos]] who dies before receiving it.<ref>{{cite book |last1=Hamilton |first1=B. |editor1-last=Ciggaar |editor1-first=Krijna Nelly |editor2-last=Teule |editor2-first=Herman G. B. |title=East and West in the Crusader States: Context, Contacts, Confrontations II : Acta of the Congress Held at Hernen Castle in May 1997 |date=1999 |publisher=Peeters Publishers |isbn=978-90-429-0786-7 |page=5 |url=https://books.google.com/books?id=RIcB2H-O_ZoC |access-date=26 February 2024 |language=en |chapter=Aimery of Limoges and the Unity of Churches}}</ref>
* The [[Drigung Kagyu]] school of [[Kagyu]] [[Buddhism]] is founded (approximate date).
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