Placidia

Placidia () was a 5th-century Roman noblewoman and briefly empress in the Western Roman Empire. Her father was Valentinian III, Roman emperor in the West from 425 to 455. In 455, shortly after her marriage to Olybrius, she was captured by Gaiseric and spent six or seven years as a hostage of the Vandal Kingdom. At the end of this period Placidia was ransomed back to Constantinople, where she remained during Olybrius's few months as western Roman emperor in 472. She was one of the last imperial spouses in the Roman west, during the Fall of the Western Roman Empire in Late Antiquity.

==Family== Placidia is estimated to have been born between 439 and 443, the second daughter of Valentinian III and Licinia Eudoxia. Her elder sister, Eudocia, later married Huneric, son of Gaiseric, king of the Vandals. Both sisters were named for their grandmothers: Eudocia for the maternal, Aelia Eudocia, and Placidia for the paternal, Galla Placidia.