Hephæstus was a town in Roman Egypt, in the province of Augustamnica Prima, the eastern part of the Nile Delta.
The name Hephæstus is known only from ecclesiastical sources; its Egyptian name and its site are unknown.
Ecclesiastical history
The original diocese was in Augustamnica Prima, a suffragan of Pelusium.Parthey's Notitia Prima and the Coptic allusion to it published by J. de Rougé, in his "Géographie ancienne de la Basse Egypte" (Paris, 1891, 157).
It is mentioned by HieroclesSynecdemus, 727, 9. and by George of Cyprus, as among the thirteen towns of Augustamnica Prima.
Le Quien mentions only two bishops: John, who took part in two Councils of Ephesus (First, 431 and Second, 449), and Peter, present at the Council of Constantinople in 459.
It remains a Roman Catholic titular see.
Notes
Sources The entry cites: Heinrich Gelzer, (Leipzig, 1890), 112; William Smith, Dictionary of Greek and Roman Geography, s. v.