Theodosius II

Theodosius II (401–450), called the Calligrapher, was the only son of Arcadius and Aelia Eudoxia. Made co-augustus in January 402 at nine months old, he became sole eastern emperor in May 408. Early government fell to Anthemius, builder of the Theodosian Walls, and from 414 to his sister Pulcheria.

In 425 he founded the University of Constantinople and made Valentinian III western emperor. The Codex Theodosianus of 438 collected imperial edicts since Constantine I.

His reign saw the Council of Ephesus in 431 and heavy tribute to Attila's Huns. He died on 28 July 450 after a riding accident.