As to who this Paulinus was, and when this confession was sent to him, there has been some confusion. Theodoret has been supposed to write “bishop of Thessalonica,” and then has been found fault with by Baronius for describing the Paulinus the Eustathian bishop of Antioch as of Thessalonica in order to conceal the fact of Damasus and the Antiochene Paulinus being in communion. But the patronage of this Paulinus by Damasus was notorious, and if Theodoret wanted to ignore it, he need not have inserted this document at all. But, as Valesius points out, all that Theodoret says is that Damasus sent it to bishop Paulinus, when he was at Thessalonica, and calls attention to the recognition of this by Baronius (ann. 378. 44). The letter is in the Holsteinian Collection, with the heading “Dilectissimo fratri Paulino Damasus.” Paulinus was probably at Thessalonica on his way from Rome in 382.