Dey 2008 argues that xenodochium was a type of a monastic institution whose everyday obligation was the care for the sick. Thus, Martyn's translation of xenodochia as hostelries might be misleading.
In the earlier letters mentioning Epiphanius, Gregory refers to him only as a presbyter ( and ). It seems that in the meantime he was promoted to archpresbyterate, or that he simply became the oldest among Cagliari's presbyters, thus earning the prefix "arch". He is mentioned as archpresbyter also in the letter 9.198 ().