Ammonius

Otherwise little attested; known chiefly as the recipient of four letters from Isidore of Pelusium, the early-fifth-century ascetic and biblical exegete whose vast surviving correspondence (roughly two thousand short letters) addresses a wide spectrum of clergy, monks, officials, and laypeople around Pelusium in the eastern Nile Delta. The name Ammonius was extremely common in late antique Egypt, and he cannot be securely identified with any of the better-known bearers of the name; on the basis of Isidore's milieu he was most plausibly a cleric, monk, or local correspondent active in the Pelusium region in the first half of the fifth century AD. No specific dates, offices, or biographical details can be confirmed from the surviving evidence.