狄奥多西一世(347～395年)
Theodosius I
别名狄奥多西大帝（Theodosius the Great）
全名Flavius Theodosius
东罗马帝国皇帝（379～392）和东西罗马帝国皇帝（392～395）。出生於西班牙基督教信徒家庭，後随父从军，其父当时是一名将军。後在与萨尔马特人作战中战功显赫，遂被皇帝格拉提安任命为共治皇帝，统治罗马帝国东部地区（379）。狄奥多西一世对真正的基督教教义举行讨论，後决定采用尼西亚信经作为基督教教义的标准（380）。387年，狄奥多西一世还与西哥德人签署了一项协定。同年，西班牙人马克西穆斯推翻罗马帝国西部地区的新帝，马克西穆斯後被狄奥多西一世打败（388），此後狄奥多西一世在整个罗马帝国拥有了至高无上的权力（392）。狄奥多西一世与圣安布罗斯曾就教会在帝国事务中的作用问题展开辩论，不同意教会拥有政治权力。392年由阿波加斯特和尤吉尼厄斯发起的提倡异教运动在罗马影响日益扩大，後被狄奥多西一世镇压（394），狄奥多西一世宣称，这是基督教的神战胜了异教的神。
English version：
347～395年
Theodosius I
Roman emperor of the East (379-92) and of East and West (392-95). Born in Spain of Christian parents, he served in the military under his father, a general. He distinguished himself against the Sarmatians and was proclaimed coemperor by Gratian to rule in the eastern empire (379). To settle the contentious debate over true Christianity, he adopted the Nicene Creed as the Christian norm (380). He reached a treaty with the Visigoths (382). When the Spanish general Maximus overthrew the new coemperor in the western empire (387), Theodosius defeated the usurper (388) and claimed supreme authority over the whole empire (392). He argued with St. Ambrose over the role of the church in imperial affairs, but did not grant power to the church. In 392 forces advocating paganism led by Arbogast and Eugenius took power in Rome. In 394 Theodosius defeated them, and claimed the Christian God victorious over the pagan gods.