County of Oldenburg
countship
The County of Oldenburg (German: Grafschaft Oldenburg) was a county of the Holy Roman Empire. From 1667–1773, it was also part of the kingdom of Denmark.
The ruling House of Oldenburg rose to European prominence in 1448, when Count Christian ascended the throne as king of Denmark and left Oldenburg to be governed by his brothers. His descendants also include the Dukes of Holstein-Gottorp.
When the main line of the House of Oldenburg became extinct in 1667, the county passed to the Danish branch, which administered it from Copenhagen. By the Treaty of Tsarskoye Selo in 1773, Denmark transferred control of Oldenburg to Frederick August I of the Holstein-Gottorp line. Subsequently, Oldenburg was elevated to a duchy in 1774.
History
Origins and early expansion (1108-1448)
The town was first mentioned in 1108, at that time known under the name of Aldenburg. It became important due to its location at a ford of the navigable Hunte river. Oldenburg became a small county in the shadow of the much more powerful Free Hanseatic City of Bremen.
The public source identifies “County of Oldenburg” as countship. This brief keeps that definition visible, then builds a research path around County, Oldenburg and countship.
Why this record matters
A short description can identify a subject without explaining its stakes. For “County of Oldenburg”, the useful work is to connect “countship” to the records capable of establishing context and consequence.
The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Sep 19, 2026. The linked authority identifier is Q170390. Authority coordinates are 53.138, 8.216. 2 of 2 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1667, 1773, 1448 and 1774.
The absence of detail may reflect summary conventions rather than a lack of surviving documentation. 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
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
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The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
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- Expand the search: follow County of Oldenburg primary sources, County of Oldenburg archive and County research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
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This entry incorporates text from “County of Oldenburg” 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.