Career
He afterwards fought against the Alemanni and in Mauretania. By her, he had at least two sons, Honorius and Theodosius (afterwards Emperor Theodosius I), born at Cauca (modern Coca, Segovia) in Spain. Relatives and near relatives
Ancestor: Sextus Julius Caesar
Maternal grandparents: Marcus Actius
Father: Flavius Julius Honorius
Mother: Flavia Actia
Uncles: Flavius Julius Theodosius / Flavius Julius Gerontius
Brother: Flavius Honorius
Sons: Flavius Theodosius / Flavius Honorius
Grandchildren: Flavius Honorius / Flavius Arcadius / Flavius Didimus / Flavius Lagodius / Flavius Theudiselus / Flavia Maria / Flavia Serena / Flavia Thermantia
Cousins: Flavius Valerius Clemens Maximus
Nephews: Flavius Octavius / Flavius Constantinus
Grandnephews: Flavius Moyne / Flavius Constans / Flavius Ambrosius / Flavius Eucherius
In 368 Flavius Theodosius was first raised to the Roman military rank of comes (akin to a general) and sent to Britannia to recover the lands lost to the Great Conspiracy in the previous year.
Ammianus Marcellinus records that he put down a rebellion by the Pannonian Valentine.
Having done so, he recovered and re-arranged its provinces, although many of its people had been killed or sold into slavery by the invaders. In 373 Count Theodosius was made commander of the expedition to suppress the rebellion of Firmus in Mauretania, which proved to be yet another victory for the skilled commander.
But after this victory he was arrested, taken to Carthage, and put to death in early 376. But two years later, in 378, after the Roman defeat at the Battle of Adrianople, the younger Theodosius was rehabilitated, placed in charge of the Roman armies in the eastern half of the empire, and quickly elevated to the rank of emperor on January 19, 379, following his successes in the field
