521

By place

Byzantine Empire

• Future Byzantine emperor Justinian, age 39, is appointed consul. He later becomes Commander-in-chief of the army of the East.

  Arabia

• Ma`adikarib Ya`fur becomes king, supported by the Aksumites; he begins a military campaign against the Arabian tribes.

  By topic

Music

• Boethius introduces Greek musical letter notation to the West.

  Religion

• February 22 - Samson of Dol is ordained as bishop in Brittany, on the Feast of the Chair of Saint Peter.
• Ecclesius becomes a bishop of Ravenna.