Augustine writes this letter to his Donatist counterpart, Macrobius, in AD 409 or 410, but he refers also to the events that happened under Macrobius' predecessor, Proculeian. Augustine already tried to intervene with Macrobius asking him not to rebaptize Rusticianus in Letter 106. What is of interest to us is the high position of the presbyters of Hippo, who are the direct superiors of the lower clergy: Rusticianus is said to be excommunicated by "his presbyter" - we do not know what exactly this pronoun means, but the fact of excommunication being done by the presbyters (testified twice here, so probably a matter of routine!) is very telling. Together with records such as  it begs the question of what in fact the role of Augustine was in the administration of the church of Hippo.