We are not sure whether the Rogatianus mentioned in the address of the letter is the same as the presbyter praised in the fourth chapter. However, if it is so, despite the troubling lack of the word “presbyter” in the address, we should consider Sergius also a presbyter, senior to Rogatianus; the normal hierarchical order would suggest this, although the name of Sergius is anyway missing in the part of the manuscripts (Deléani 2007: 130).