49 surviving letters between Isidore and Isidore of Pelusium, spanning 425 AD.
“To Isidore the Bishop The man about whom you wrote met with me, seeming indeed to be grieved, but on the verge of rejoicing.”
“To Isidore, Bishop.”
“To Isidore, presbyter.”
“To Isidore, the bishop.”
“To the Same.”
“To Isidore, deacon.”
“To Isidore the Bishop.”
“To Isidore, a bishop.”
“Who is to be reckoned prudent and brave.”
“To Isidore, bishop.”
“To Isidore the Deacon On the meaning of "As far as Appii Forum and Three Taverns.”
“To the same man.”
“To Isidore the Deacon.”
“To Isidore.”
“To the same person.”
“To the Same Persons Judgment, I think, is unmixed; but it is tempered according to the quality, the quantity, and the magnitude of sins.”
“To Isidore the deacon.”
“To Isidore the Scholasticus [advocate/lawyer] Acts are judged by the intention, my excellent friend.”
“To Isidore, scholasticus [an advocate or learned man trained in law and rhetoric].”
“To the Same Person On the text: "My soul refused to be comforted.”
“To Isidore, the deacon.”
“To Isidore the Deacon That piety is the summit of the virtues.”
“On the text: "If it be possible, so far as it depends on you" [Romans 12:18, "If it be possible, as much as lieth in you…”
“To Isidore the Presbyter.”
“To Isidore the bishop.”