Currently alive, at 52 years of age.
810 – Born in Italy. Anastasius Bibliothecarius was a language scholar, Roman cardinal, and influential political counselor to 9th-century popes.
848 – Anastasius became cardinal priest of the Church of St. Marcellus, Rome, after gaining prominence as a Greek scholar.
850 – He was excommunicated by a Roman synod.
853 – Was anathematized and deposed by another synod.
– Deposed because of political activity, he stood for a short time as antipope to Benedict III.
855 – Anastasius was elected as antipope by the imperial party, but the rightfully elected pope, Benedict III, gained the supremacy, and acted kindly towards the usurper.
869 – He was sent by Emperor Louis II as envoy to Constantinople, with two men of high rank in the Frankish Empire, to negotiate a marriage between the oldest son of the Byzantine emperor and the daughter of the emperor in the West.
878 – He died and was replaced by Zacharias of Anagni as librarian of the Roman Church.