Nevertheless, Petro managed to improve his status by marrying the extremely wealthy Tertulla, whose fortune guaranteed the upward mobility of Petro's son Titus Flavius Sabinus I. Sabinus himself amassed further wealth and possible equestrian status through his services as tax collector in Asia and banker in Helvetia (modern Switzerland).
Namun demikian, Petro berhasil meningkatkan statusnya dengan menikahi Tertulla yang sangat kaya, yang kekayaannya menjamin mobilitas putra Petro Titus Flavius Sabinus I. Sabinus sendiri mengumpulkan kekayaannya lebih lanjut dan status eques melalui jasa sebagai pemungut pajak di Asia dan bankir di Helvetia (modern Swiss).