Born in 1071 he became Duke of Aquitaine in 1086 when he was about fifteen years old. He was the first great troubadour in the Languedoc region. He also wrote songs in the Provencal dialect which were amoral, erotic and irreverent. When he went on crusade he was supposed to have had a painting of his wife on his shield as, "it was his will to bear her in battle, as she had borne him in bed". 
However, most of his children were fathered by either Maubergeon or Dangereuse, wive of Aymeric I, Vicomte de Chƒtellerault. She had left her husband to become the mistress of the Duke of Aquitaine. 
About 1115, he was excommunicated by the papal legate Girard but, in 1118 after negotiations, the punishment was withdrawn. In 1121 he married his eldest son to the legitimate daughter of his mistress. 
 

Source: Leo van de Pas