Ortelius. A research atlas of thematic cartography
EST. MMXXVI PRIME MERIDIAN 0°00′00″  ·  EQUATOR 0°00′00″  ·  PROJECTION: ORTHOGRAPHIC 22 STUDIES INDEXED
Historical ·Medieval ·Continental ·Europe

Episcopal Sees of the Latin Church, 1050–1300

The administrative geography of Latin Christianity at the height of the medieval papacy.

642 records 1050–1300 CE 48.78° N · 5.66° E
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Fig. 1 Interactive distribution of the 642 geolocated records on a live carto-positron base · globe / flat projection · decimal degrees (WGS 84).
Abstract

Locations, elevation dates, and metropolitan affiliation of episcopal sees across Latin Christendom during the central Middle Ages. The dataset traces the consolidation of diocesan administration and the shifting boundaries of ecclesiastical provinces across two and a half centuries.

Record
ThemeHistorical — religious & historical geography
RegionEurope
Temporal range1050–1300 CE
Geographic coverageContinental
Records642 geolocated entities
Data sourceWikidata + curated CSV
Centroid48.78° N · 5.66° E
Last revisedJan 2026
Provenance & sources

Compiled from a curated CSV corpus (n = 642) and reconciled against Wikidata entities. Geographic coordinates were verified against published gazetteers prior to publication.

· accessed 2026-01-12
SPARQL query
SELECT ?item ?itemLabel ?coord ?inception WHERE { ?item wdt:P31 ?class . ?item wdt:P625 ?coord . OPTIONAL { ?item wdt:P571 ?inception . } SERVICE wikibase:label { bd:serviceParam wikibase:language "en". } }
Recommended citation
Ortelius Editorial Board, ed. “Episcopal Sees of the Latin Church, 1050–1300” [dataset]. Ortelius: A Research Atlas of Thematic Cartography, Study AT-009. 2026. doi:10.5281/ortelius.009
DATASET CC BY 4.0 · ENRICHMENT CC0 · CARTOGRAPHY MIT
Data & reproducibility

The published dataset is distributed as CSV with a derived GeoJSON edition; coordinates are decimal degrees on the WGS 84 datum. DOI 10.5281/ortelius.009.