Michael I Rangabé was Byzantine emperor from 811 to 813.
Michael I, as depicted in the 12th century Madrid Skylitzes.
Solidus of Michael I and his son Theophylact
Coronation of Michael I from the 12th-century Madrid Skylitzes, probably drawn from an earlier unrelated source.
The armies of Michael I (below) and Krum (above) prepare for battle after negotiations failed.
Nikephoros I, also known as Nicephorus I The Open-minded, was the Byzantine emperor from 802 to 811. He began his career as genikos logothetēs under Empress Irene, but later overthrew her to seize the throne. Prior to becoming emperor, he was sometimes referred to as "the Logothete" and "Genikos" or "Genicus", in recognition of his previous role.
Khan Krum captures Nikephoros I, from the 14th-century Manasses Chronicle