[3][4] However, the abbreviation could be used for the gentile name Servius as well as the praenomen; and further complicating matters, in imperial times it was not uncommon for members of the Roman aristocracy to possess part or all of two or more complete nomenclatures.
A small amount of epigraphic evidence weighs in favour of Sergius in connection with the Octavia gens, which regularly used the praenomen Marcus, but not Servius.
[9] Besides the inscriptions mentioning his consulship, Pontianus had a monument built at Tusculum in memory of his grandmother, Rubellia Bassa, the daughter of Gaius Rubellius Blandus and possibly his wife, Julia Livia, the granddaughter of Tiberius.
Although the consulship remained the chief executive magistracy, under the authority of the emperors, much of its significance—and the reason why several different pairs of consuls shared the office each year—was to prepare able administrators to hold provincial governorships and other important positions throughout the empire.
But while Pontianus probably held a variety of magistracies and other appointments before and after the consulship, none of the inscriptions mentioning him give any details of his career, except that he seems to have been a member of the College of Pontiffs.