Map of the Diocese of Egypt in antiquity The Diocese of Zagylis is the titular diocese of the

Roman Catholic Church The Catholic Church, also known as the Roman Catholic Church, is the largest Christian church, with 1.3 billion baptized Catholics worldwide . It is among the world's oldest and largest international institutions, and has played a ...

, established in 1933 by

Pope Pius XI Pope Pius XI ( it, Pio XI), born Ambrogio Damiano Achille Ratti (; 31 May 1857 – 10 February 1939), was head of the Catholic Church from 6 February 1922 to his death in February 1939. He was the first sovereign of Vatican City fro ...

, named after the ancient city of Zagylis in present-day

Libya Libya (; ar, ليبيا, Lībiyā), officially the State of Libya ( ar, دولة ليبيا, Dawlat Lībiyā), is a country in the Maghreb region in North Africa. It is bordered by the Mediterranean Sea to the north, Egypt to Egypt–Libya bo ...

. This city was in the

Roman province The Roman provinces (Latin: ''provincia'', pl. ''provinciae'') were the administrative regions of Ancient Rome outside Roman Italy that were controlled by the Romans under the Roman Republic and later the Roman Empire. Each province was rule ...

Libya Inferior Marmarica (Greek Μαρμαρική) in ancient geography was a littoral area in Ancient Libya, located between ''Cyrenaica'' and ''Aegyptus''. It corresponds to what is now the Libya and Egypt frontier, including the towns of Bomba (ancient '' ...

. Since the foundation, the diocese had no titular bishop. The diocese re-establishes an ancient bishopric that flourished in the

Roman Empire The Roman Empire ( la, Imperium Romanum ; grc-gre, Βασιλεία τῶν Ῥωμαίων, Basileía tôn Rhōmaíōn) was the post-Republican period of ancient Rome. As a polity, it included large territorial holdings around the Mediterr ...

. Three bishops from antiquity are known. Michel Le Quien
''Oriens christianus in quatuor Patriarchatus digestus''
(Paris, 1740), vol.II, coll. 635-636 #Filocalo (fl.449) #Massimo (

fl. ''Floruit'' (; abbreviated fl. or occasionally flor.; from Latin for "they flourished") denotes a date or period during which a person was known to have been alive or active. In English, the unabbreviated word may also be used as a noun indicatin ...

457) #Giovanni (fl.480 circa)

References

{{reflist Catholic titular sees in Africa Former Roman Catholic dioceses in Africa