Guillaume IX

Duke of Aquitaine and Gascony and Count of Poitou
Person human Q5351
Guillaume IX
Unknown authorUnknown author · Public Domain · Wikimedia
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Summary

Guillaume IX was born on October 22, 1071[1], in Poitiers[2]. He died on February 10, 1126[3], in Poitiers[4]. He worked as a troubadour[5], poet[6], writer[7], composer[8], and warrior[9]. He ranks in the top 0.72% of human entities by monthly Wikipedia readership (2,756 views/month, #7,159 of 1,000,298).[10]

Key Facts

  • Place of burial: Church of Saint-Jean de Montierneuf[11]
  • Father: William VIII, Duke of Aquitaine[12]
  • Mother: Hildegarde of Burgundy[13]
  • Spouse: Ermengarde of Anjou[14], Philippa, Countess of Toulouse[15]
  • Child: Agnes of Aquitaine, Queen of Aragon[16], William X, Duke of Aquitaine[17], Henry of Poitiers[18], Raymond of Poitiers[19]
  • Country of citizenship: France[20], Duchy of Aquitaine[21]
  • Native language: Old Occitan[22]
  • Notable work: Q140710079[23]
  • Sex or gender: male[24]
  • Family: Ramnulfids[25]
  • Noble title: duke of Aquitaine[26], count of Poitiers[27]
  • Movement: troubadoric poetry[28], medieval music[29]
  • Commons category: William IX, Duke of Aquitaine[30]
  • Unmarried partner: Dangereuse de L'Isle Bouchard[31]
  • Participated in conflict: Battle of Cutanda[32]
  • Family name: Q141622063[33]
  • Given name: Guilhem[34]
  • Significant event: Excommunication in the Catholic Church[35]
  • Described by source: Brockhaus and Efron Encyclopedic Dictionary[36]
  • Languages spoken, written or signed: Old Occitan[37]
  • Name in native language: Guilhem IX d'Aquitania[38]
  • Sibling: Agnes of Aquitaine, Queen of Aragon and Navarre[39], Beatrix of Poitiers[40]

Why It Matters

Guillaume IX has Wikipedia articles in 23 language editions, a strong signal of global cultural recognition.[41] He is known by 41 alternative names across languages and contexts.[42]

FAQs

Where was Guillaume IX born?

Guillaume IX's place of birth was Poitiers[2].

Where did Guillaume IX die?

Guillaume IX died in Poitiers[4].

Who were Guillaume IX's parents?

Guillaume IX's father was William VIII, Duke of Aquitaine[12]. Guillaume IX's mother was Hildegarde of Burgundy[13].

Who was Guillaume IX married to?

Guillaume IX's spouses include Ermengarde of Anjou[14] and Philippa, Countess of Toulouse[15].

What did Guillaume IX do for work?

Guillaume IX worked as a troubadour[5], poet[6], writer[7], composer[8], and warrior[9].

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. [24] ↑ . BnF authorities. Retrieved . wikidata.org.
  4. [12] ↑ . wikidata.org.
  5. [13] ↑ . wikidata.org.
  6. [14] ↑ . Retrieved . wikidata.org.
  7. [15] ↑ . Q75653886. Retrieved . wikidata.org.
  8. [20] ↑ . BnF authorities. Retrieved . wikidata.org.
  9. [21] ↑ . wikidata.org.
  10. [16] ↑ . Q75653886. wikidata.org.
  11. [17] ↑ . Q75653886. wikidata.org.
  12. [18] ↑ . wikidata.org.
  13. [19] ↑ . wikidata.org.
  14. [25] ↑ . wikidata.org.
  15. [26] ↑ . wikidata.org.
  16. [27] ↑ . wikidata.org.
  17. [22] ↑ . wikidata.org.
  18. [5] ↑ . BnF authorities. Retrieved . wikidata.org.
  19. [6] ↑ . wikidata.org.
  20. [7] ↑ . wikidata.org.
  21. [8] ↑ . Musicalics. Retrieved . wikidata.org.
  22. [9] ↑ . wikidata.org.
  23. [11] ↑ . wikidata.org.
  24. [28] ↑ . wikidata.org.
  25. [29] ↑ . wikidata.org.
  26. [30] ↑ . wikidata.org.
  27. [31] ↑ . wikidata.org.
  28. [1] ↑ . BnF authorities. Retrieved . wikidata.org.
  29. [3] ↑ . BnF authorities. Retrieved . wikidata.org.
  30. [32] ↑ . wikidata.org.
  31. [33] ↑ . wikidata.org.
  32. [34] ↑ . wikidata.org.
  33. [35] ↑ . wikidata.org.
  34. [23] ↑ . wikidata.org.
  35. [36] ↑ . wikidata.org.
  36. [37] ↑ . BnF authorities. Retrieved . wikidata.org.
  37. [38] ↑ . wikidata.org.
  38. [39] ↑ . wikidata.org.
  39. [40] ↑ . wikidata.org.

Aggregate / graph-position facts

  1. [10] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [41] ↑ . Wikidata sitelinks. wikidata.org.
  3. [42] ↑ . 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). Guillaume IX. Retrieved October 17, 2026, from https://4ort.xyz/entity/guillaume-ix
MLA “Guillaume IX.” 4ort.xyz Knowledge Graph, 4ort.xyz, 17 Oct. 2026, https://4ort.xyz/entity/guillaume-ix.
BibTeX @misc{4ortxyz_guillaume-ix_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Guillaume IX}}, year = {2026}, url = {https://4ort.xyz/entity/guillaume-ix}, note = {Accessed: 2026-10-17}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Guillaume IX — https://4ort.xyz/entity/guillaume-ix (retrieved 2026-10-17)

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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. 10h ago · CathSoph · 2026-10-17 view diff on Wikidata ↗
    Name in native language → {'lang': 'oc', 'text': "Guilhem IX d'Aquitania"}
    Claims rich → —
    "/* wbsetclaim-update:2||1 */ Name in native language: Guilhem IX d'Aquitania"
  2. 20h ago · Baptiste de Lusignan · 2026-10-17 view diff on Wikidata ↗
    Claims rich → —
    "/* wbsetclaim-update:2||1|5 */ Noble title: duke of Aquitaine"
  3. 3d ago · AntiDerangedKhanTengriAction · 2026-10-14 view diff on Wikidata ↗
    Open library id → OL6390526A, OL5986145A
    Claims rich → —
    "/* wbcreateclaim-create:1| */ Open library id: OL5986145A, [[:toollabs:quickstatements/#/batch/290734|batch #290734]]"
  4. 15d ago · 日巫女 · 2026-10-02 view diff on Wikidata ↗
    Family name → Q141622063
    Claims rich → —
    "/* wbcreateclaim-create:1| */ Family name: Q141622063, #quickstatements; #temporary_batch_1790931548881"
  5. 15d ago · 日巫女 · 2026-10-02 view diff on Wikidata ↗
    Wikipedia title → William IX of Aquitaine
    Wikipedia languages → ['an', 'ar', 'be', 'bg', 'br', 'ca', 'commons', 'cs', 'de', 'el', 'en', 'eo', 'e
    Sitelink count → 44
    Familysearch person id → LBV3-PXG
    + 1 other property edited (see Wikidata diff for full list)
    "/* wbcreateclaim-create:1| */ Familysearch person id: LBV3-PXG, #quickstatements; #temporary_batch_1790902746679"
  6. 4w ago · Gerwoman · 2026-09-17 view diff on Wikidata ↗
    Sancho el sabio foundation id → 18322
    "/* wbsetclaim-create:1||1 */ Sancho el sabio foundation id: 18322, Matched to [[:toollabs:mix-n-match/#/entry/285266275|Duque de Aquitaine Guillermo IX (#285266275)]] in [[:toollabs:mix-n-match/#/cata"
  7. 11w ago · Loenstock · 2026-07-27 view diff on Wikidata ↗
    Native language → Old Occitan
    Notable work → Q140710079
    "/* wbsetclaim-create:2||1 */ Native language: Old Occitan"
  8. 12w ago · Pierrotrgr · 2026-07-22 view diff on Wikidata ↗
    Biblissima authority id → Hypocalyptus
    "/* wbsetclaim-create:2||1 */ Biblissima authority id: Q24000, Import ID Biblissima V2 ([[:toollabs:editgroups/b/OR/74d891b831c|details]])"
  9. 13w ago · Estevoaei · 2026-07-16 view diff on Wikidata ↗
    Enciclopedia galega universal id → 132777
    "/* wbsetclaim-create:1||1 */ Enciclopedia galega universal id: 132777, Matched to [[:toollabs:mix-n-match/#/entry/192262546|Guillerme IX de Aquitania o Trobador (#192262546)]] in [[:toollabs:mix-n-mat"
  10. 22w ago · CathSoph · 2026-05-16 view diff on Wikidata ↗
    Cerl thesaurus id → cnp01316179
    Date of death → +1126-02-10T00:00:00Z
    Place of birth → Poitiers
    "/* wbsetclaim-update:2||1 */ Place of birth: Poitiers"
  11. 22w ago · Epìdosis · 2026-05-12 view diff on Wikidata ↗
    Local thumb → —
    Cerl thesaurus id → cnp01316179
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/30850|batch #30850]]: match CERL IDs on the basis of GND (6)"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.