Home › Entities › human › Janusz the Younger

Janusz the Younger

Polish prince
Person human Q11203314
Press Enter · cited answer in seconds

Summary

Janusz the Younger was born on 1382[1]. He died on October 18, 1422[2]. He is known by 7 alternative names across languages and contexts.[3]

Key Facts

  • Father: Janusz I of Warsaw[4]
  • Mother: Danutė of Lithuania[5]
  • Spouse: Katarzyna Melsztyńska[6]
  • Sex or gender: male[7]
  • Family: Piasts of Mazovia[8]
  • Given name: Janusz[9]
  • Sibling: Bolesław Januszowic[10], Konrad Januszowic[11]

FAQs

Who were Janusz the Younger's parents?

Janusz the Younger's father was Janusz I of Warsaw[4]. Janusz the Younger's mother was Danutė of Lithuania[5].

Who was Janusz the Younger married to?

Janusz the Younger's spouses include Katarzyna Melsztyńska[6].

References

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

Direct Wikidata claims

  1. [7] ↑ . wikidata.org.
  2. [4] ↑ . wikidata.org.
  3. [5] ↑ . wikidata.org.
  4. [6] ↑ . wikidata.org.
  5. [8] ↑ . wikidata.org.
  6. [1] ↑ . wikidata.org.
  7. [2] ↑ . wikidata.org.
  8. [9] ↑ . wikidata.org.
  9. [10] ↑ . wikidata.org.
  10. [11] ↑ . wikidata.org.

Aggregate / graph-position facts

  1. [3] ↑ . Wikidata aliases. wikidata.org.

📑 Cite this page

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). Janusz the Younger. Retrieved October 16, 2026, from https://4ort.xyz/entity/janusz-the-younger
MLA “Janusz the Younger.” 4ort.xyz Knowledge Graph, 4ort.xyz, 16 Oct. 2026, https://4ort.xyz/entity/janusz-the-younger.
BibTeX @misc{4ortxyz_janusz-the-younger_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Janusz the Younger}}, year = {2026}, url = {https://4ort.xyz/entity/janusz-the-younger}, note = {Accessed: 2026-10-16}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Janusz the Younger — https://4ort.xyz/entity/janusz-the-younger (retrieved 2026-10-16)

Canonical URL: https://4ort.xyz/entity/janusz-the-younger · Last refreshed:

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. 9d ago · Printstream · 2026-10-07 view diff on Wikidata ↗
    Sitelink count → 4
    Wikipedia languages → ['de', 'el', 'en', 'pl']
    Claims rich → —
    "/* wbeditentity-update-languages-short:0||de */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/57986|batch #57986]]: Import missing aliases from dewiki 3/3"
  2. 22w ago · Artsiom91 · 2026-05-11 view diff on Wikidata ↗
    Freebase id → /m/012mgzfp
    Geni.com profile id → 6000000009441282397
    Roglo person id → p=janusz;n=piast;oc=1
    Date of death → +1422-10-18T00:00:00Z
    + 13 other properties edited (see Wikidata diff for full list)
    "/* wbsetclaim-create:2||1 */ Geni.com profile id: 6000000009441282397"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.