451

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year=451
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Events

By Place

Western Roman Empire

* April 7 — The Huns sack Metz.
* June 20 — Battle of Chalons: The Huns and the Ostrogoths, facing the Romans and the Visigoths, achieve at best a draw. After the battle, between 10,000 and 20,000 men lie dead on the Catalaunian Fields.

Europe

* Battle of Vartanantz: The Armenian army is defeated by the Persians, and their rebel leader, Saint Vartan, dies. Despite the loss, Armenians consider this battle to have been a moral and religious victory, since the Persian king, out of respect for their efforts, allows them to remain Christian. The anniversary is a national and religious holiday.

Asia

* Sassanid ruler Yazdegerd II's decree abolishes the Sabbath, and orders executions of Jewish leaders, including the Exilarch Mar Nuna.

By Topic

Religion

* October 8 — Council of Chalcedon, Ecumenical council of the Christian church. As a result of this council the Oriental Orthodox churches became a separate communion.
* Jerusalem becomes a Patriarchate.
* Dioscorus of Alexandria is deposed as Patriarch of Antioch.

Births

* Jacob of Serugh, Syriac author
* Brigid of Ireland, Irish saint

Deaths

* Theodoric, king of the Visigoths (killed in battle)
* Liu Yikang
* Tuoba Huang