''For another saint called ''Theodosius the Great'' living in the fifth-sixth centuries, see [[Theodosius the Great (cenobiarch)]].''

Flavius Theodosius was born on [[January 11]], 347, in Cauca (modern Coca) in the Roman province of Spain, the son of Comes Theodosius (the elder) and Thermantia, who both were Orthodox Christians. He married Aelia Flacilla, by whom he had three children: two sons, Arcadius and Honorius (his future successors), and a daughter, Pulcheria. Aelia Flacilla (also ''Placilla'' or ''Plakilla'') is commemorated as a saint on [[September 14]]. Both Aelia and Pulcheria died in 385. After Aelia's death, Theodosius married Galla, the daughter of Valentinian I, by whom he had a daughter, Galla Placidia, the mother of Valentinian III.

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*[[Wikipedia:Theodosius I]]

*[http://ocafs.oca.org/FeastSaintsViewer.asp?FSID=109027 Emperor Theodosius the Great]