Philadelphion

After passing the Forum of Theodosius, the Mese Odos (the main road of Constantinople) branched into two directions.

[2] The Parastaseis record the presence of statues of Constantine the Great (r. 306–337), his mother Helena, and his sons, seated on thrones, around a large four-sided porphyry column, topped by a gilded cross and marked with the sign of a sponge at the base,[3] as well as statues of Julian the Apostate and his wife, whom the Parastaseis erroneously records as Anastasia.

[5] The Patria of Constantinople furthermore records that statues of two sons of Constantine seated on thrones stood opposite from the column.

The event never actually took place—Constantine's sons only met briefly in Pannonia after his death—but the statue probably existed, similar to another three-headed statue of Constantine and two of his sons, Constans and Constantius, which the Parastaseis record as lost at sea at the time of Theodosius II (r. 402–450), symbolizing concord in the imperial family.

[10] Given the inaccuracy of the historical details in the Parastaseis, it is possible that even the identification with Constantine's sons is wrong, while it is unclear from the phrasing of the text whether this monument survived until the 8th century, or whether it had been destroyed long before.

The two statue groups of the Portrait of the Four Tetrarchs in Venice , possibly originally located at the Philadelphion
Missing heel portion kept in the Istanbul Archaeology Museum