The anonymous Saxon poet known as Poeta Saxo, who composed the medieval Latin Annales de gestis Caroli magni imperatoris libri quinque ("Annals of the Deeds of Emperor Charlemagne in Five Books") was probably a monk of Sankt Gallen or possibly Corvey. His Annales is one of the earliest poetic treatments of annalistic material and one of the earliest historical works to concentrate on Saxony. It is considered characateristic of the dénouement of the Carolingian Renaissance.
The Saxon identity of the poet is implicit in only two places in the text of his poem, as when he refers to the Saxons as "our people" in lines 687–690. He probably began collecting oral tradition about Charlemagne, the conqueror of the Saxons, 883, but he soon graduated to annalistic texts, such as the Annales regni Francorum as compiled under Einhard, and biographic works, like Einhard's Vita Karoli Magni; he composed his poem between 888 and 891, during the reign of Arnulf of Carinthia, whom he addresses. The Poeta was steeped in classical poetry and schooled in rhetoric. The Annales gives evidence of his having access to now lost annals and he has been a source for historians, though most literary critics offer less praise, noting that the Poeta is a versifier who simply tansformed prose annals into metric ones with little original contribution.
He "goes beyond received and conventional ideas", however, in portraying Charlemagne as superior to the Roman emperors, standing beside Constantine in Heaven, and famous as David (this idea came from Charlemagne's court nickname). In the final book, where the Poet depicts the nations on Judgement Day, he has each nation led by a different apostle: Peter leads the Jews and Paul leads the Gentiles, under whom Andrew leads the Greeks, John the Asians, Matthew the Ethiopians, Thomas the Indians, and Charlemagne the Saxons. The Poeta is among the saved Saxons who enter Christ's presence; it is for this reason that he overlooks the brutality of Charlemagne's conquest of his people, for with Charlemagne came Christian salvation.