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Thmuis (//; Greek: Θμοῦις; Arabic: Tell El-Timai) is a city of Lower Egypt, on the canal east of the Nile, between its Tanitic and Mendesian branches. In Greco-Roman Egypt, Thmuis replaced Djedet as the capital of Lower Egypt's 16th nome of Kha [ Herodotus (II, 166) ]. The two cities are only several hundred meters apart. Ptolemy also states that the city was the capital of the Mendesian nome.
Thumis was an episcopal see in the Roman province of Augustamnica Prima, suffragan of Pelusium. Today it is part of the Coptic Holy Metropolitanate of Beheira (Thmuis & Hermopolis Parva), Mariout (Mariotis), Marsa Matruh (Antiphrae & Paractorium), Libya (Livis) and Pentapolis (Cyrenaica).
In the fourth century it was still an important Roman city, having its own administration and being exempt from the jurisdiction of the Prefect of Alexandria. It was in existence at the time of the Arab invasion in 641 AD, and was later called Al-Mourad or "Al-Mouradeh"; it must have disappeared after the Turkish conquest.
- St. Phileas, martyr (in the Martyrology, 4 February)
- Saint Donatus, his successor, martyr
- Liberius[disambiguation needed] (not Caius), at the First Council of Nicaea in 325
- Saint Serapion of Thmuis, died shortly before 360, the author of various works, in part preserved, a friend of St. Athanasius
- Ptolemæus at the Council of Seleucia (359)
- Aristobulus, at the First Council of Ephesus (431).
- "Thmuis". Catholic Encyclopedia. New York: Robert Appleton Company. 1913.
- Baines & Malek "Cultural Atlas of Ancient Egypt", 2000. ISBN 0-8160-4036-2
- M.I. Bakr & H. Brandl, "Various Sites in the Eastern Nile Delta: Thmuis", in: M.I. Bakr and H. Brandl, with F. Kalloniatis (eds.), Egyptian Antiquities from the Eastern Nile Delta. Museums in the Nile Delta, vol. 2. Cairo/Berlin 2014, pp. 79, 294-301. ISBN 9783000453182.