Gratian - Augustus of Imperium Romanum from 367 to 388
Flavius Gratianus Augustus was Roman emperor from 367 to 383.

He was the son of Emperor Valentinian I by Marina Severa, and was born at Sirmium. He ruled alongside his father from 367 to 375, alongside his brother Valentinian II from 375 to 379, and finally alongside Theodosius I from 379 to 383, as Augustus in the west.

By using foreign bodyguards, and appearing in public in the dress of a Scythian warrior, he aroused the contempt and resentment of his Roman troops. A Roman general named Magnus Maximus took advantage of this feeling to invade Gaul with a large army. Gratian was deserted by his troops, and fled from Paris to Lyon. The governor of Lyon delivered Gratian to one of the rebel generals, Andragathius, and he was assassinated on 25 August 383.
Emperor Gratian of the Roman Empire

(1) Gratian 383 AD
AE Half-Centenionalis Unknown mint
Reverse: VOT XX MVLT XXX, in four lines within wreath
Ref: Sear 20158ff
(2) Gratian 367-375
Obverse: Draped Bust right "DN GRATIANVS P F AVG"
Reverse: Roma seated facing on throne, looking left, holding Victory on globe and spear, left leg bare "VIRTVS ROMANORVM"
Ref: RIC 58a
(3) Gratian 367-375 AD
Obverse: pearl-diademed, draped and cuirassed bust right; D N GRATIANVS P F AVG
Reverse: Valens advancing right, dragging captive and holding labarum; GLORIA RO_MANORVM / M _ * above P / ΔSISC
Ref: RIC IX Siscia 14c, type xvii
(4) Gratian 378-383 AD
Obverse: pearl-diademed, draped and cuirassed bust right; D N GRATIA_NVS P F AVG
Reverse: Gratian standing front, head left, holding Victory on globe and raising kneeling female on left; REPARATIO__REIPVB / PCON
Ref: RIC IX Arles 20a