 Oost has pointed out that in his chronicle Hydatius wrote Placidia was unmarried as of 455.Steven Muhlberger points out that many of the events in the chronicle of Hydatius are based on hearsay, that problems with his chronology "resulted from delays and distortions in the best information to which he had access," and thus the evidence from Hydatius is not as decisive as Oost believed.Regardless, the powerful "Magister militum" Aetius had forced Valentinian to betroth Placidia to his own son Gaudentius, so Olybrius could not have married her before Aetius' death.