poet, teacher, and biblical critic. Born and educated in Ireland, he went to France between 840 and 851, and then followed the itinerant royal court. His occasional poems show the range of his patrons. His De Rectoribus Christianis may arise from a formal position as tutor to the future King Lothair II; his extensive grammatical commentaries testify to his work as a teacher. His other works include commentaries on Mt. and the Pauline Epistles, the latter drawing on the genuine commentary of Pelagius.