Basil I, nicknamed "the Macedonian", was Byzantine emperor from 867 to 886. Born a lowly peasant in the theme of Macedonia, he rose to prominence in the imperial court after entering into the service of Theophilitzes, a relative of Emperor Michael III. He was given a fortune by the wealthy Danielis and gained Michael's favour, whose mistress he married on his emperor's orders. In 866, Michael proclaimed him co-emperor, but Basil ordered his assassination the next year, thus installing himself as sole ruler of the empire. Despite his humble origins, he showed great ability in running the affairs of state, and founded the Macedonian dynasty. He was succeeded upon his death by his son Leo VI.

Michael III, also known as Michael the Drunkard, was Byzantine emperor from 842 to 867. Michael III was the third and traditionally last member of the Amorian dynasty. He was given the disparaging epithet the Drunkard by the hostile historians of the succeeding Macedonian dynasty, but modern historical research has rehabilitated his reputation to some extent, demonstrating the vital role his reign played in the resurgence of Byzantine power in the 9th century. He was also the youngest person to bear the imperial title, as well as the youngest to succeed as senior emperor.