Editing 521 (section)

=== By topic ===
==== Music ====
* [[Boethius]] introduces [[Music of Greece|Greek musical letter]] notation to the West.

==== Religion ====
* [[February 22]] &ndash; [[Samson of Dol]] is ordained as [[bishop]] in [[Brittany]], on the Feast of the [[Chair of Saint Peter]].
* [[Ecclesius of Ravenna|Ecclesius]] becomes a [[bishop of Ravenna]].<ref>{{Cite book |last=Menzies |first=Lucy |url=https://books.google.com/books?id=NyiD9VhxfwEC |title= The Saints in Italy: A Book of Reference to the Saints in Italian Art and Dedication |publisher=Medici Society Limited |year=1924 |pages=144 |access-date=November 14, 2024}}</ref>
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