John IV, Duke of Brittany

Duke of Brittany
Person human Q544055
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John IV, Duke of Brittany

Summary

John IV, Duke of Brittany is a human[1]. Born in Hennebont[2], he… he was born on 1294[3]. He died in Hennebont[4]. He died on September 26, 1345[5]. He worked as an aristocrat[6]. He ranks in the top 0.72% of human entities by monthly Wikipedia readership (91 views/month, #7,186 of 1,000,298).[7]

Key Facts

  • John IV, Duke of Brittany's place of birth was Hennebont[2].
  • John IV, Duke of Brittany died in Hennebont[4].
  • John IV, Duke of Brittany was born on 1294[3].
  • John IV, Duke of Brittany died on September 26, 1345[5].
  • John IV, Duke of Brittany is buried at Brittany[8].
  • John IV, Duke of Brittany's father was Arthur II, Duke of Brittany[9].
  • John IV, Duke of Brittany's mother was Yolande of Dreux[10].
  • John IV, Duke of Brittany was married to Joanna of Flanders[11].
  • A child of John IV, Duke of Brittany was John V, Duke of Brittany[12].
  • A child of John IV, Duke of Brittany was Joan of Brittany, Baroness of Drayton[13].
  • John IV, Duke of Brittany held citizenship in Kingdom of England[14].
  • John IV, Duke of Brittany worked as an aristocrat[6].
  • John IV, Duke of Brittany is recorded as male[15].
  • John IV, Duke of Brittany's instance of is recorded as human[16].
  • John IV, Duke of Brittany's family is recorded as House of Dreux[17].
  • John IV, Duke of Brittany's noble title is recorded as count[18].
  • John IV, Duke of Brittany's noble title is recorded as duke[19].
  • John IV, Duke of Brittany's Commons category is recorded as John II, Count of Montfort-l'Amaury[20].
  • John IV, Duke of Brittany's family name is recorded as de Montfort[21].
  • John IV, Duke of Brittany's given name is recorded as John[22].
  • John IV, Duke of Brittany's name in native language is recorded as {'lang': 'fr', 'text': 'Jean de Montfort'}[23].
  • John IV, Duke of Brittany's different from is recorded as John V, Duke of Brittany[24].
  • John IV, Duke of Brittany's sibling is recorded as Alice of Brittany[25].
  • John IV, Duke of Brittany's sibling is recorded as Beatrice of Brittany[26].
  • John IV, Duke of Brittany's sibling is recorded as Guy of Penthièvre[27].

Body

Origins and Family

John IV, Duke of Brittany's place of birth was Hennebont[2]. He was born on 1294[3]. His father was Arthur II, Duke of Brittany[9]. His mother was Yolande of Dreux[10].

Career and Affiliations

John IV, Duke of Brittany's professions included aristocrat[6].

Personal Life

Among John IV, Duke of Brittany's spouses was Joanna of Flanders[11]. Children include John V, Duke of Brittany[12], a sovereign[28], 1339–1399[29], of Duchy of Brittany[30] and Joan of Brittany, Baroness of Drayton[13], 1341–1402[31], of France[32].

Death and Burial

John IV, Duke of Brittany died on September 26, 1345[5]. He died in Hennebont[4]. He is buried at Brittany[8].

Why It Matters

John IV, Duke of Brittany ranks in the top 0.72% of human entities by monthly Wikipedia readership (91 views/month, #7,186 of 1,000,298).[7] He has Wikipedia articles in 15 language editions, a strong signal of global cultural recognition.[33] He is known by 11 alternative names across languages and contexts.[34]

FAQs

Where was John IV, Duke of Brittany born?

John IV, Duke of Brittany was born in Hennebont[2].

Where did John IV, Duke of Brittany die?

John IV, Duke of Brittany passed away in Hennebont[4].

Who were John IV, Duke of Brittany's parents?

John IV, Duke of Brittany's father was Arthur II, Duke of Brittany[9]. John IV, Duke of Brittany's mother was Yolande of Dreux[10].

Who was John IV, Duke of Brittany married to?

John IV, Duke of Brittany's spouses include Joanna of Flanders[11].

What did John IV, Duke of Brittany do for work?

John IV, Duke of Brittany worked as aristocrat[6].

References

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

Direct Wikidata claims

  1. [2] . wikidata.org.
  2. [4] . wikidata.org.
  3. [15] . wikidata.org.
  4. [9] . wikidata.org.
  5. [10] . wikidata.org.
  6. [11] . Retrieved . wikidata.org.
  7. [14] . wikidata.org.
  8. [16] . wikidata.org.
  9. [12] . wikidata.org.
  10. [13] . wikidata.org.
  11. [17] . wikidata.org.
  12. [18] . wikidata.org.
  13. [19] . wikidata.org.
  14. [6] . wikidata.org.
  15. [8] . wikidata.org.
  16. [20] . wikidata.org.
  17. [3] . wikidata.org.
  18. [5] . books.google.fr. books.google.fr. Provenance: wikidata.org.
  19. [21] . wikidata.org.
  20. [22] . wikidata.org.
  21. [23] . 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

Class ancestry

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

Aggregate / graph-position facts

  1. [7] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [33] . Wikidata sitelinks. wikidata.org.
  3. [34] . 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). John IV, Duke of Brittany. Retrieved April 10, 2026, from https://4ort.xyz/entity/john-iv-duke-of-brittany
MLA “John IV, Duke of Brittany.” 4ort.xyz Knowledge Graph, 4ort.xyz, 10 Apr. 2026, https://4ort.xyz/entity/john-iv-duke-of-brittany.
BibTeX @misc{4ortxyz_john-iv-duke-of-brittany_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{John IV, Duke of Brittany}}, year = {2026}, url = {https://4ort.xyz/entity/john-iv-duke-of-brittany}, note = {Accessed: 2026-04-10}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): John IV, Duke of Brittany — https://4ort.xyz/entity/john-iv-duke-of-brittany (retrieved 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. 4d ago · Printstream · 2026-07-04 view diff on Wikidata ↗
    P14608 100947751
    "/* wbcreateclaim-create:1| */ [[Property:P14608]]: 100947751, #quickstatements; #temporary_batch_1783130387391"
  2. 10d ago · Daieuxetdailleurs · 2026-06-28 view diff on Wikidata ↗
    Francearchives agent id 507550663
    "/* wbcreateclaim-create:1| */ [[Property:P9371]]: 507550663, #quickstatements; #temporary_batch_1782644922236"
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