Van wie was Willem IX van Aquitanië?

Willem IX (22 oktober 1071 - Chizé, 10 februari 1126), bijgenaamd de Troubadour of de Jonge, was een zoon van graaf Willem VIII van Poitiers en Hildegarde van Bourgondië. Willem wordt beschouwd als een van de belangrijke voorbeelden van dichters en zangers uit de riddercultuur van de latere middeleeuwen.

Dangereuse of L'Île-Bouchard (Poitevin: Dangerosa; 1079 – 1151) was the daughter of Bartholomew, Lord of L'Île-Bouchard and his wife Gerberge of Blaison. She was the maternal grandmother of Eleanor of Aquitaine. She was also mistress to her granddaughters' paternal grandfather, William IX, Duke of Aquitaine. As the mistress of William the Troubadour, she was known as La Maubergeonne for the tower he built for her at his castle in Poitiers.

Dangereuse ("Dangerous") was a sobriquet she received for her seductiveness; her baptismal name may have been Amauberge or Amal(a)berge.