 On 23 October 425, Valentinian III was installed as Emperor of the West with the assistance of the "magister officiorum" Helion, with his mother acting as regent.To strengthen the ties between the two parts of the Empire, Theodosius' daughter Licinia Eudoxia was betrothed to Valentinian.In 425, Theodosius founded the University of Constantinople with 31 chairs (15 in Latin and 16 in Greek).