The Ars Bonifacii is the title given to a Latin grammar ascribed to Saint Boniface.
The latter two date from the late eighth-early ninth centuries, and both also contain the grammar of Tatwine,[1] though Vivien Law notes that the two did not share a transmission history and came to the two codices by different ways--Tatwine's likely from England to the court of Charlemagne, and Boniface's from the areas in Germany where Anglo-Saxon missionaries were active.
[2] The basic framework of Boniface's grammar derives from Aelius Donatus's Ars Maior, though his examples are drawn from elsewhere.
[3] It shares four sources with Tatwine's: Donatus, Priscian,[4] Isidore, and Asporius.
The Christian backdrop for such language learning also meant that Boniface and other grammarians at the time had to incorporate non-Latin terms and names (specifically, some Greek terminology and Hebrew names) in the Latin grammatical system.