The emperor and his mother fled to Theodosius, the emperor of the East and husband of Galla, Valentinian's sister.
Giovanni Evangelista, erected by Galla Placidia in fulfilment of a vow made on her voyage from Constantinople, has been entirely rebuilt, though the columns are ancient (the Corinthian capitals are probably from a classical building), and the crypt may be original.
The sarcophagus of Galla Placidia has, like the two others that stand here, been despoiled of its contents.
The whole region is characterized by a remarkable degree of physical uniformity, and may be broadly described as a vast plateau of an average elevation of 3000 ft., bounded westwards by the Ethiopian and Galla highlands and northwards by an inner and an outer coast range, skirting the south side of the Gulf of Aden in its entire length from the Harrar uplands to Cape Guardafui.
The Somali belong to the Eastern (Ethiopic) Hamitic family of tribes, of which the other chief members are the neighbouring Galla and Afar, the Abyssinian Agau and the Beja tribes between the Nubian Nile and the Red Sea.