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Marga (East Syriac diocese)

mediaeval diocese of the Church of the East

Architectural plans, a scale model, maps and brass measuring instruments
Places and architectureInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionJul 2, 2025
Entity authorityQ6759059 ↗
Source-derived summary

The Diocese of Marga was an East Syriac diocese of the Church of the East. The diocese was included in the metropolitan province of Adiabene, and is attested between the eighth and fourteenth centuries. Towards the end of the thirteenth century the name of the diocese was changed to 'Tella and Barbelli'.

History

The diocese of Marga, attested between the eighth and fourteenth centuries and frequently mentioned in Thomas of Marga's Book of Governors, included a large number of villages and monasteries around ʿAqra. In the middle of the eighth century the diocese is known to have included the districts of Sapsapa (the Navkur plain south of ʿAqra, on the east bank of the Khazir river), Talana and Nahla d'Malka (two valleys around the upper course of the Khazir river) and Beth Rustaqa (the Gomel valley), and it probably also included several villages in the Zibar district. The metropolitan Maranʿammeh of Adiabene, who flourished in the third quarter of the eighth century, adjusted the boundaries of the dioceses of Dasen and Marga, transferring the districts of Nahla and Talana from Marga to Dasen and also assigning the Great Monastery to the diocese of Dasen.

The diocese of Marga is first mentioned in the eighth century (the region was probably in the diocese of Beth Nuhadra previously), and several of its bishops are mentioned between the eighth century and the first half of the thirteenth century. By the second half of the thirteenth century the names of two villages in the Gomel valley, Tella and Barbelli (Billan), were also included in the title of the diocese. The last-known bishop of Tella and Barbelli, Ishoʿyahb, was present at the synod of Timothy II in 1318. The diocese is not mentioned thereafter, and no other bishops are known from the ʿAqra region until the nineteenth century.

Editorial summary

This brief starts where responsible research should: with the source description of “Marga (East Syriac diocese)” as mediaeval diocese of the Church of the East. Everything that follows is an evidence route, not borrowed authority.

Editorial reviewA strong orientation record where physical form, institutional use and historical geography need to be read together. The current lead gives the account dated anchors—1318—that can be checked directly. The selected authority fields contribute no independent date. The account is most persuasive where Marga, East and Syriac can be independently traced.
Editorial analysis

Why this record matters

The subject matters to the places & architecture register because the source frames it as mediaeval diocese of the Church of the East. Its deeper value depends on whether names, dates, institutions and citations support that framing.

Evidence profile

Place names and jurisdictional language are key evidence: both can reveal earlier catalogue descriptions and overlooked record series. The source revision retrieved here is dated Jul 2, 2025. The linked authority identifier is Q6759059. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1318.

Critical limits

Modern boundaries and familiar names can conceal earlier jurisdictions or structures that do not align with the present site. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Treat names, boundaries and functions as historically changeable. Maps, plans, inventories and administrative records can clarify what the place meant at different dates.

Best used for
  • Historic place names
  • Jurisdictional context
  • Routes into maps and plans
Verify next

Contemporary maps, plans, listed-building records, estate papers and the responsible local or national archive.

Three-step research path

  1. Establish the record: confirm the title “Marga (East Syriac diocese)”, its source revision and the description used here.
  2. Expand the search: follow Marga (East Syriac diocese) primary sources, Marga (East Syriac diocese) archive and Marga research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

  1. Which source most directly establishes the central claim about “Marga (East Syriac diocese)”?
  2. Which earlier names or jurisdictions may reveal additional records?
  3. Which authority defined the place, boundary or structure at the relevant date?
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Source & attribution

This entry incorporates text from “Marga (East Syriac diocese)” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.