Ischyrion

Ischyrion is known only as a recipient of seven letters from Isidore of Pelusium, the ascetic exegete active in the eastern Nile Delta of Egypt in the early-to-mid 5th century. The address honorifics applied to him vary across the collection-presbyter, deacon, and advocate (scholasticus)-suggesting he was a clergyman and a man of some learning with whom Isidore corresponded as an equal interlocutor rather than a subordinate. The letters are predominantly exegetical and exhortatory: Isidore expounds passages of Paul and the Gospels (Romans 8:18, Luke/Matthew on God's goodness, the parable of the unmerciful servant), argues that the failures of those who read Scripture do not discredit Scripture itself, and addresses Ischyrion's own written questions on righteousness and repentance. A warmer note (new-345) commends Ischyrion for honoring a 'father's judgment' in supporting an elected leader, implying his involvement in ecclesiastical or community affairs; beyond these exchanges he is otherwise unattested.