Magnus Maximus was Roman emperor in the West from 383 to 388. He usurped the throne from emperor Gratian.
The Pillar of Eliseg in Wales. The pillar's inscription and the Historia Brittonum trace the sovereignty of contemporary Welsh kingdoms back more than 500 years to Maximus.
Illustration from a 14th-century Welsh manuscript thought to intend to depict Magnus Maximus. Llanbeblig Hours (f. 3r.)
Gratian was emperor of the Western Roman Empire from 367 to 383. The eldest son of Valentinian I, Gratian was raised to the rank of Augustus as a child and inherited the West after his father's death
Magnus Maximus
…Maximus (Classical Latin: ; born 335 AD — died 28 August 388 AD) was Roman emperor in the West from 383 to 388. He usurped the throne from emperor Gratian. Born in Gallaecia, he served as an officer in Britain under Theodosius the Elder during the Great Conspiracy. In 383, he was proclaimed emperor in…
Bust possibly representing Gratian found in Trier, (Rheinisches Landesmuseum Trier).
Solidus of Valentinian I showing Valentinian and Gratian on the reverse, marked: victores augusti ("the Victors Augusti"). A palm bough is between them and Victory crowns each with a wreath
Solidus of Gratian, struck 374/5
Solidus of Theodosius I showing Theodosius and Gratian on the reverse, marked: victoria augg ("the Victory of the Augusti")