The Council of Chalcedon begins with a broadside against Pope Dioscorus of Alexandria. The Tome of Leo is accepted. Marcian and Pulcheria hope Chalcedon will be result in universal agreement, but future troubles are seen.

Links:
Painting of the Council of Chalcedon by Vasily Surikov

Extensive documentation on the Council of Chalcedon/Fourth Ecumenical Council

Leo’s Letter to Theodoret of Cyrus on the acceptance of the Tome of Leo

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#455 – A History of the Catholic Church – The Council of Chalcedon