Casimir I of Kuyavia

Polish prince (c. 1211 – 1267)
Person human Q936880
Casimir I of Kuyavia
Maksymilian Fajans · Public Domain · Wikimedia
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Casimir I of Kuyavia

Summary

Casimir I of Kuyavia is a human[1]. He was born on January 1, 1211[2]. He passed away in Inowrocław[3]. He died on November 14, 1267[4]. He worked as an aristocrat[5]. He ranks in the top 0.73% of human entities by monthly Wikipedia readership (139 views/month, #7,275 of 1,000,298).[6]

Key Facts

  • Casimir I of Kuyavia passed away in Inowrocław[3].
  • Casimir I of Kuyavia was born on January 1, 1211[2].
  • Casimir I of Kuyavia died on November 14, 1267[4].
  • Casimir I of Kuyavia is buried at Poland[7].
  • Casimir I of Kuyavia's father was Konrad I of Masovia[8].
  • Casimir I of Kuyavia's mother was Agafia of Rus[9].
  • Casimir I of Kuyavia was married to Constance of Wrocław[10].
  • Casimir I of Kuyavia was married to Euphrosyne of Opole[11].
  • Casimir I of Kuyavia was married to Jadwiga[12].
  • A child of Casimir I of Kuyavia was Leszek II the Black[13].
  • A child of Casimir I of Kuyavia was Ziemomysł of Kuyavia[14].
  • A child of Casimir I of Kuyavia was Władysław I the Elbow-high[15].
  • A child of Casimir I of Kuyavia was Euphemia of Kuyavia[16].
  • A child of Casimir I of Kuyavia was Casimir II of Łęczyca[17].
  • A child of Casimir I of Kuyavia was Siemowit, Duke of Kuyavia-Brieg[18].
  • Casimir I of Kuyavia worked as an aristocrat[5].
  • Casimir I of Kuyavia is recorded as male[19].
  • Casimir I of Kuyavia's instance of is recorded as human[20].
  • Casimir I of Kuyavia's family is recorded as Piast dynasty[21].
  • Casimir I of Kuyavia's noble title is recorded as duke[22].
  • Casimir I of Kuyavia's Commons category is recorded as Casimir I, Duke of Kuyavia[23].
  • Casimir I of Kuyavia's given name is recorded as Kazimierz[24].
  • Casimir I of Kuyavia's given name is recorded as Casimir[25].
  • Casimir I of Kuyavia's sibling is recorded as Judith of Masovia[26].
  • Casimir I of Kuyavia's sibling is recorded as Siemowit I of Masovia[27].

Body

Origins and Family

Casimir I of Kuyavia was born on January 1, 1211[2]. His father was Konrad I of Masovia[8]. His mother was Agafia of Rus[9].

Career and Affiliations

Casimir I of Kuyavia's professions included aristocrat[5].

Personal Life

Spouses include Constance of Wrocław[10]; Euphrosyne of Opole[11], a politician[28], 1228–1292[29]; and Jadwiga[12]. Children include Leszek II the Black[13], a sovereign[30], 1241–1288[31], of Poland[32]; Ziemomysł of Kuyavia[14], an aristocrat[33], 1240–1287[34]; Władysław I the Elbow-high[15], a politician[35], 1260–1333[36], of Kingdom of Poland[37], specialised in politics[38]; Euphemia of Kuyavia[16], 1265–1308[39]; Casimir II of Łęczyca[17], an aristocrat[40], 1260–1294[41], of Duchy of Łęczyca[42]; and Siemowit, Duke of Kuyavia-Brieg[18], an aristocrat[43], 1265–1312[44].

Death and Burial

Casimir I of Kuyavia died on November 14, 1267[4]. He died in Inowrocław[3]. Burial took place at Poland[7].

Why It Matters

Casimir I of Kuyavia ranks in the top 0.73% of human entities by monthly Wikipedia readership (139 views/month, #7,275 of 1,000,298).[6] He has Wikipedia articles in 14 language editions, a strong signal of global cultural recognition.[45] He is known by 9 alternative names across languages and contexts.[46]

FAQs

Where did Casimir I of Kuyavia die?

Casimir I of Kuyavia passed away in Inowrocław[3].

Who were Casimir I of Kuyavia's parents?

Casimir I of Kuyavia's father was Konrad I of Masovia[8]. Casimir I of Kuyavia's mother was Agafia of Rus[9].

Who was Casimir I of Kuyavia married to?

Casimir I of Kuyavia's spouses include Constance of Wrocław[10], Euphrosyne of Opole[11], and Jadwiga[12].

What did Casimir I of Kuyavia do for work?

Casimir I of Kuyavia worked as aristocrat[5].

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [3] . wikidata.org.
  2. [19] . wikidata.org.
  3. [8] . wikidata.org.
  4. [9] . wikidata.org.
  5. [10] . Retrieved . wikidata.org.
  6. [11] . Retrieved . wikidata.org.
  7. [12] . wikidata.org.
  8. [20] . wikidata.org.
  9. [13] . The Peerage. wikidata.org.
  10. [14] . wikidata.org.
  11. [15] . Q24366912. wikidata.org.
  12. [16] . wikidata.org.
  13. [17] . The Peerage. wikidata.org.
  14. [18] . The Peerage. wikidata.org.
  15. [21] . wikidata.org.
  16. [22] . wikidata.org.
  17. [5] . wikidata.org.
  18. [7] . wikidata.org.
  19. [23] . wikidata.org.
  20. [2] . CERL Thesaurus. Retrieved . wikidata.org.
  21. [4] . wikidata.org.
  22. [24] . wikidata.org.
  23. [25] . wikidata.org.
  24. [26] . wikidata.org.
  25. [27] . wikidata.org.

Inline context (facts about related entities)

  1. [28] . Wikidata. wikidata.org. → on this site
  2. [29] . Wikidata. wikidata.org. → on this site
  3. [30] . Wikidata. wikidata.org. → on this site
  4. [31] . Wikidata. wikidata.org. → on this site
  5. [32] . Wikidata. wikidata.org. → on this site
  6. [33] . Wikidata. wikidata.org. → on this site
  7. [34] . Wikidata. wikidata.org. → on this site
  8. [35] . Wikidata. wikidata.org. → on this site
  9. [36] . Wikidata. wikidata.org. → on this site
  10. [37] . Wikidata. wikidata.org. → on this site
  11. [38] . Wikidata. wikidata.org. → on this site
  12. [39] . Wikidata. wikidata.org. → on this site
  13. [40] . Wikidata. wikidata.org. → on this site
  14. [41] . Wikidata. wikidata.org. → on this site
  15. [42] . Wikidata. wikidata.org. → on this site
  16. [43] . Wikidata. wikidata.org. → on this site
  17. [44] . Wikidata. wikidata.org. → on this site

Class ancestry

  1. [1] . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [6] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [45] . Wikidata sitelinks. wikidata.org.
  3. [46] . Wikidata aliases. wikidata.org.

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Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). Casimir I of Kuyavia. Retrieved April 10, 2026, from https://4ort.xyz/entity/casimir-i-of-kuyavia
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BibTeX @misc{4ortxyz_casimir-i-of-kuyavia_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Casimir I of Kuyavia}}, year = {2026}, url = {https://4ort.xyz/entity/casimir-i-of-kuyavia}, note = {Accessed: 2026-04-10}}
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Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 8w ago · Epìdosis · 2026-05-13 view diff on Wikidata ↗
    Aliases
    Spouse Constance of Wrocław, Euphrosyne of Opole, Jadwiga
    Father Konrad I of Masovia
    Family Piast dynasty
    + 12 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/30853|batch #30853]]: match CERL IDs on the basis of GND (8)"
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