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Guillaume IX

William IX (Guilhèm de Peitieus or Guilhem de Poitou, Guillaume de Poitiers; called the Troubadour; 22 October 1071 – 10 February 1126) was the Duke of Aquitaine and Gascony and Count of Poitou between 1086 and his death. He was also one of the leaders of the Crusade of 1101. Though his political and military achievements have a certain historical importance, he is best known as the earliest troubadour—a vernacular lyric poet in the Occitan language—by whom some work survives.

Also recorded as William IX, Duke of Aquitaine · William IX

Guillaume IX

Guillaume IX d'Aquitaine.

This file comes from Gallica Digital Library and is available under the digital ID btv1b60007960 · Public domain

Name
William IX
Born
22 October 1071
Birthplace
Poitiers
Died
10 February 1126
Nationality
France · Duchy of Aquitaine
Occupation
troubadour · poet · writer · composer · warrior
Movements
troubadoric poetry · medieval music
Known for
Lyrical poems

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Documentary summary

William IX (Guilhèm de Peitieus or Guilhem de Poitou, Guillaume de Poitiers; called the Troubadour; 22 October 1071 – 10 February 1126) was the Duke of Aquitaine and Gascony and Count of Poitou between 1086 and his death. He was also one of the leaders of the Crusade of 1101. Though his political and military achievements have a certain historical importance, he is best known as the earliest troubadour—a vernacular lyric poet in the Occitan language—by whom some work survives.

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Note VALÉORINE

Guillaume IX (1071–1126) was a composer, poet and troubadour, among other activities, a national of the Duchy of Aquitaine and France. The composer died in Poitiers. Guillaume IX was associated with medieval music and troubadoric poetry.

Among the works is Lyrical poems. Languages used include Old Occitan.

Composed from admitted, traceable facts · 27 September 2026

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Authority files

bnf · gnd · loc · wikidata · Q5351

In this article

  1. 01Biography
  2. 02Compositions and principal works
  3. 03Notes, references and evidence

The Encyclopedia exists whether or not anything is for sale. Corrections are recorded rather than overwritten, and every version of this record is kept. Published 14 August 2026.

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