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:''For other figures with this name, including his paternal grandfather, see Gratian (disambiguation).'' Gratian (; (ラテン語:Flavius Gratianus Augustus);〔In Classical Latin, Gratian's name would be inscribed as FLAVIVS GRATIANVS AVGVSTVS.〕 18 April/23 May 359 – 25 August 383) was Roman emperor from 375 to 383. The eldest son of Valentinian I, during his youth Gratian accompanied his father on several campaigns along the Rhine and Danube frontiers. Upon the death of Valentinian in 375, Gratian's brother Valentinian II was declared emperor by his father's soldiers. In 378, Gratian's generals won a decisive victory over the Lentienses, a branch of the Alamanni, at the Battle of Argentovaria. Gratian subsequently led a campaign across the Rhine, the last emperor to do so, and attacked the Lentienses, forcing the tribe to surrender. That same year, his uncle Valens was killed in the Battle of Adrianople against the Goths – making Gratian essentially ruler of the entire Roman Empire. He favoured Christianity over traditional Roman religion, refusing the divine attributes of the Emperors and removing the Altar of Victory from the Roman Senate. ==Life== Gratian was the son of Emperor Valentinian I〔(Roman-emperors.org )〕 by Marina Severa, and was born at Sirmium (now Sremska Mitrovica, Serbia) in Pannonia. He was named after his grandfather Gratian the Elder. Gratian was first married to Flavia Maxima Constantia, daughter of Constantius II. His second wife was Laeta. Both marriages remained childless. His stepmother was Empress Justina and his paternal half siblings were Emperor Valentinian II, Galla and Justa. On 24 August 367 he received from his father the title of ''Augustus''. On the death of Valentinian (17 November 375), the troops in Pannonia proclaimed his infant son (by a second wife Justina) emperor under the title of Valentinian II. Gratian acquiesced in their choice; reserving for himself the administration of the Gallic provinces, he handed over Italy, Illyricum and Africa to Valentinian and his mother, who fixed their residence at Mediolanum. The division, however, was merely nominal, and the real authority remained in the hands of Gratian. Gratian's general Mallobaudes, a king of the Franks, and Naniemus, completely defeated the Lentienses, the southernmost branch of the Alamanni, in May 378 at the Battle of Argentovaria. Upon receiving news of the victory, Gratian personally led a campaign across the Upper Rhine into the territory of the Lentienses. After initial trouble facing the Lentienses on high ground, Gratian blockaded the enemy instead and received their surrender. The Lentienses were forced to supply young men to be levied into the Roman army, while the remainder were allowed to return home. Later that year, Valens met his death in the Battle of Adrianople on 9 August. Valens refused to wait for Gratian and his army to arrive and assist in defeating the host of Goths, Alans and Huns; as a result, two-thirds of the eastern Roman army were killed as well. In the same year, the government of the Eastern Empire devolved upon Gratian, but feeling himself unable to resist unaided the incursions of the barbarians, he promoted Theodosius I on 19 January 379 to govern that portion of the Empire. Gratianus and Theodosius then cleared the Illyricum of barbarians in the Gothic War (376-382). For some years Gratian governed the Empire with energy and success but gradually sank into indolence, occupying himself chiefly with the pleasures of the chase, and became a tool in the hands of the Frankish general Merobaudes and bishop St. Ambrose of Milan. By taking into his personal service a body of Alans, and appearing in public in the dress of a Scythian warrior, after the disaster of the Battle of Adrianople, he aroused the contempt and resentment of his Roman troops. A Roman general named Magnus Maximus took advantage of this feeling to raise the standard of revolt in Britain and invaded Gaul with a large army. Gratian, who was then in Paris, being deserted by his troops, fled to Lyon. There, through the treachery of the governor, Gratian was delivered over to one of the rebel generals, Andragathius, and assassinated on 25 August 383. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Gratian」の詳細全文を読む スポンサード リンク
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