Galla
1.
The wife of Constantius, son of Constantius Chlorus. She was the mother of Caesar.
2.
The second wife of Theodosius the Great.
3.
Placidia, daughter of the preceding by
Theodosius. When Alaric took Rome in A.D. 410, she fell into his hands, and four years later
was married by Ataulphus, king of the Goths. Upon his death she was returned to her country,
and in 417 married Constantius III., by whom she had the emperor Valentinian III. During the
minority of her son she was regent of the Western Empire, dying about the year 450. See
Gibbon,
Decline and Fall, chapters xxxi., xxxiii., xxxv.