Located near Lampsacus, it was a colony probably founded by Eretria and Paros. It belonged to the Delian League. In the Hellenistic period it came under the domain of Lysimachus, and subsequently the Attalid dynasty. In Roman times, it was a colonia, within the province of Asia; after that province was divided in the 4th century, it was in the province of Hellespontus. The ancient coinage of Parium is quite abundant, attesting to its great output and advanced mint (in Hellenistic times, the city's badge shown on coins was the Gorgoneion).
The Acts of the martyr St. Onesiphorus prove that there was a Christian community there before 180. Other saints worthy of mention are: St. Menignus, martyred under Decius and venerated on 22 November; St. Theogenes, bishop and martyr, whose feast is observed on 3 January; St. Basil, bishop and martyr in the ninth century, venerated on 12 April.
Le Quien (Oriens christianus I, 787-90) mentions 14 bishops, the last of whom lived in the middle of the fourteenth century. An anonymous Latin bishop is mentioned in 1209 by Innocent III (Le Quien, op. cit., III, 945) and a titular bishop in 1410 by Eubel (Hierarchia Catholica medii ævi, I, 410).
At first a suffragan of the Archbishopric, Parium became an autocephalous archdiocese as early as 640 (Heinrich Gelzer, Ungedruckte ... Texte, 535) and remained so till the end of the 13th century. Then the Emperor Andronicus II made it a metropolis under the title of Pegon kai Pariou.
In 1354 the residential see of Pegae and Parium (the Latin forms of both names) were suppressed, the incumbent metropolitan receiving in exchange the See of Sozopolis in Thrace (Miklosich and Müller, "Acta patriarchatus Constantinopolitani", I, 109, 111, 132, 300, 330). This was the end of the residential see, as a result of which it is included in the Catholic Church's list of titular sees.
- P. Fritsch (ed.), Die Inschriften von Parion (Bonn, 1983) (Inschriften griechischer Städte aus Kleinasien 25).
- "Parium". Catholic Encyclopedia. New York: Robert Appleton Company. 1913. This article incorporates text from a publication now in the public domain: Herbermann, Charles, ed. (1913). "Parium". Catholic Encyclopedia. Robert Appleton Company.