Pulcheria, and called upon to govern an empire greatly humbled.
Her accomplishments attracted Theodosius' sister Pulcheria, who took her into her retinue and destined her to be the emperor's wife.
On her return her position was undermined by the jealousy of Pulcheria and the groundless suspicion of an intrigue with her protégé Paulinus, the master of the offices.
Nevertheless she retained great influence; although involved in the revolt of the Syrian monophysites (453), she was ultimately reconciled to Pulcheria and readmitted into the orthodox church.
Meanwhile the emperor Theodosius died, and Pulcheria and Marcian who succeeded summoned, in October 451, a council (the fourth ecumenical) which met at Chalcedon.
In 1616 he returned to Louvain, to take charge of the college of St Pulcheria, a hostel for Dutch students of theology.
During his minority the empire was ably ruled by the praetorian prefect Anthemius and Pulcheria, who became her brother's guardian in 414.