Eutonius

Eutonius was a deacon and one of the most frequent correspondents of Isidore of Pelusium (d. c. 450), to whom Isidore addressed some fifty-four letters in the milieu of Pelusium and the eastern Nile Delta in early-to-mid 5th-century Egypt. The surviving letters show a sustained relationship of biblical instruction: Isidore answers his questions and resolves his perplexities on Scripture (the meaning of "Let your light shine" alongside the warning against doing alms before men, the parable of Lazarus and the rich man, and why the Mosaic Law settled involuntary killers among the Levites) as well as points of doctrine such as the eternity of the Holy Trinity. Isidore also writes to him on moral and pastoral themes, urging him not to abandon virtue because of the envy of the wicked and warning against the love of honor and glory, and at one point discusses the misconduct of two named men, Zosimus and Maron. Beyond his role as Isidore's pupil-correspondent and his title of deacon, he is otherwise unattested.