To Ascholius, bishop of Thessalonica. So all the mss.  But it is the opinion of Maran that there can be no doubt of the letter being addressed, not to Ascholius, but to Soranus, duke of Scythia.  We have seen in letter 255 that Basil requested his relative Julius Soranus to send him some relics of the Gothic martyrs.  This letter appears to refer to his prompt compliance with the request by sending relics of Saint Sabas.