Czersk, Masovian Voivodeship
village in powiat piaseczyński, Mazovian Voivodeship, Poland
Czersk (Polish pronunciation: [t͡ʂɛrsk] ) is a settlement in the administrative district of Gmina Góra Kalwaria, within Piaseczno County, Masovian Voivodeship, in east-central Poland. The village also lies on the Czersk Lake (size: 9 hectares), which is an oxbow lake of the Vistula.
Czersk was an important settlement in the past and is one of the oldest Mazovian cities, famous for ruins of a medieval castle constructed in the late 14th century. It was a royal town of the Crown of the Kingdom of Poland in the past. In 1247–1526, it was the capital of the Duchy of Czersk, one of medieval Polish duchies. After incorporation of Mazovia into Poland (1526), the duchy was turned into the Czersk Land (see ziemia), part of Masovian Voivodeship (1526–1795). The Land of Czersk was divided into four counties - those of Czersk, Grójec, Garwolin (since 1539), and Warka. Czersk itself was the seat of castellans, who also were senators of the Polish–Lithuanian Commonwealth.
Name
Czersk was first mentioned in the Laurentian Codex, in which under the date 1142, it is spelled as Чьрньскъ (Čьrnьsk, Cz(i)rn(i)sk). In Polish-language sources, it was spelled Cirnsk (1236-1237), Cyrnsko (1242), Czyersko (1456), and later, Czyrnsk or Czyrnsko.
Begin with the source’s own compact description: “Czersk, Masovian Voivodeship” is village in powiat piaseczyński, Mazovian Voivodeship, Poland. The dossier treats that line as a proposition to test through Czersk, Masovian and Voivodeship, not as a finished interpretation.
Why this record matters
The phrase “village in powiat piaseczyński, Mazovian Voivodeship, Poland” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
The strongest evidence will usually combine a dated visual record with documents produced by the authority responsible for the place. The source revision retrieved here is dated Sep 19, 2026. The linked authority identifier is Q997018. VIAF identifies the subject as 154842849. The Library of Congress control number is n85260519. Authority coordinates are 51.959, 21.231. 2 of 3 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1247, 1526, 1795 and 1539.
Architectural summaries often privilege surviving fabric and can understate demolished phases, contested use or displaced communities. 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.
- Historic place names
- Jurisdictional context
- Routes into maps and plans
Contemporary maps, plans, listed-building records, estate papers and the responsible local or national archive.
Three-step research path
- Establish the record: confirm the title “Czersk, Masovian Voivodeship”, its source revision and the description used here.
- Expand the search: follow Czersk, Masovian Voivodeship primary sources, Czersk, Masovian Voivodeship archive and Czersk 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
- Which source most directly establishes the central claim about “Czersk, Masovian Voivodeship”?
- Which authority defined the place, boundary or structure at the relevant date?
- What physical evidence or contemporary plan supports the description?
Search terms from this dossier
This entry incorporates text from “Czersk, Masovian Voivodeship” 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.