Georgius Choeroboscus

George Choiroboskos (Greek: Γεώργιος Χοιροβοσκός), Latinized as Georgius Choeroboscus, was an early 9th-century Byzantine grammarian and priest.

Little is known about his life. He held the positions of deacon and chartophylax (keeper of archives) at the Patriarchate of Constantinople, and is also referred in some of his works as oikoumenikos didaskalos (οἰκουμενικὸς διδάσκαλος), i.e. as one of the three teachers at the Patriarchal School of the Hagia Sophia. Earlier scholars used to date him in the 6th century, but he is now placed in the early 9th century, during the second period of Byzantine Iconoclasm (c. 815–843) or shortly after. This would also explain his pejorative sobriquet (choiroboskos, i.e. "swineherd") as well as the only fragmentary survival of his works, as he may have been an adherent of Iconoclasm. His reputation was certainly blackened, so that the 12th-century bishop and scholar Eustathius of Thessalonica, who quotes frequently from his works, fulminates against those who gave the "wise teacher" this nickname out of envy, and thereby condemned him to oblivion. Indeed, many of his works were later attributed to iconophile authors.

George Choiroboskos wrote a number of works on grammar, which have often survived only in fragments, as well as in the notes of his pupils.

He wrote a commentary on the canons of Theodosius of Alexandria on declension and conjugation, which survives complete; commentaries on the works of Apollonius Dyscolus, Herodian, Hephaestion of Alexandria and Dionysius Thrax, which survive in fragments; a treatise on orthography, also fragmentary; a set of epimerisms, grammatical analyses of the Psalms, which were used in Byzantine schools; and a treatise on poetry, later translated into Old Slavonic and included in Sviatoslav II's Izbornik.

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