She advised her husband to donate property to the priory of Saint-Denis-de-Vaux in a charter dated 1109, which means they were married before this point.
[2] Their marriage produced five children (two sons and three daughters): Dangereuse and Aimery were married for around seven years before she left her husband to become mistress to Duke William IX; this became an infamous liaison.
[4] This led to her leaving her husband for Duke William, who was excommunicated by the church for "abducting her"; however, she appeared to have been a willing party in the matter.
He installed her in the Maubergeonne tower of his castle in Poitiers, and, as related by William of Malmesbury, even painted a picture of her on his shield.
This was only settled when the pair arranged the marriage between William X and Dangereuse's daughter Aenor in 1121;[7] the following year Eleanor was born.