At the age of 22 months (in Paris on 5 May 1403) and again at the age of four (in Compiègne on 29 June 1406), Jacqueline was betrothed to John, Duke of Touraine, fourth son of King Charles VI of France and Queen Isabeau of Bavaria. Both children were brought up in the Castle of Le Quesnoy in Hainaut. The boy had been given into tutelage of his future father-in-law, since he was expected to succeed as ruler in Hainaut and not in any way in France itself. On 22 April 1411 the Pope gave his dispensation for the union and on 6 August 1415, when Jacqueline was fourteen, she and John married in The Hague. With this marriage, Duke William II wanted to secure the succession of his daughter to his domains; although he had at least nine illegitimate children, Jacqueline was his only legitimate offspring and as a female, her rights would be contested by her paternal uncle Bishop John of Liège and her cousin Philip the Good, Duke of Burgundy since 1419.