Having married into the Gothic Amal royal line through his second wife Matasuntha and a distinguished service record, at the time of his sudden death, he was considered the probable heir to Emperor Justinian.
[3] During the reign of Emperor Justin I, he was raised to high office (he is recorded as a vir illustris in a 519 letter addressed to him by Pope Hormisdas), eventually being appointed as magister militum per Thraciae.
In that year, he was sent to North Africa to succeed Solomon as military commander, with the task of suppressing a large-scale mutiny of the Byzantine troops led by Stotzas.
He then defeated the remaining rebels under Stotzas at the Battle of Scalas Veteres in the spring of 537 and stabilized the situation by suppressing another conspiracy amongst his troops (cf.
[8] His stature at court was such that a plot was hatched by the disaffected general Artabanes and his kinsman Arsaces to assassinate Emperor Justinian and replace him with Germanus.
The conspirators thought Germanus amenable to their plans, since he had been dissatisfied with Emperor Justinian's meddling in the settling of the will of his recently deceased brother Boraides.
In order to find out more of their intentions, Germanus met the conspirators in person, while a trusted aide of Marcellus, named Leontius, was concealed nearby and listened in.
[13] Germanus also took a step that he hoped would significantly decrease the resistance he would face from the Ostrogoths: he took as his second wife Matasuntha, the former queen of the Goths, granddaughter of Theodoric the Great and last surviving heir of the royal Amal line.
[3] Germanus is given a very favourable treatment in the work of Procopius, he openly praises him for his virtue, justice, and generosity, as well as for his energy and ability both as a soldier and an administrator.