William IX of Aquitaine

William IX of Aquitaine (October 22 1071 – February 10 1126, also Guillaume or Guilhem d'Aquitaine), nicknamed the Troubador was Duke of Aquitaine and Gascony and Count of Poitiers as William VII of Poitiers between 1086 and 1126. He was also one of the leaders of the crusade of 1101 and one of the first vernacular poets and troubadours.

See also

• Dukes of Aquitaine family tree
• Provençal literature
• Smythe, Barbara. Trobador Poets: Selections from the Poems of Eight Trobadors, including William IX, Duke of Aquitaine.