Justinian I
Apr 1 Byzantine Emperor Justin I names his nephew Justinian I as co-ruler and successor to the throne
- Aug 1 Justinian I becomes the sole ruler of the Byzantine Empire after the death of his uncle Justin I
Justinian IApr 1 Byzantine Emperor Justin I names his nephew Justinian I as co-ruler and successor to the throne
Gregory I
Gregory XIII
Julius II
Julius III
Leo X
Pius V