He inherited the Dauphin of Viennois in 1415, following the death of his older brother, Louis.

John was born in 1398,[1] the fourth son of Charles VI of France and Isabeau of Bavaria.

[2] After his betrothal to Jacqueline, he was brought up alongside her at the castle of Le Quesnoy in Hainaut, at the court of his future mother-in-law, Margaret of Burgundy.

[3] On 22 April 1411 the Pope gave his dispensation for the union and on 6 August 1415, when John was sixteen, he and Jacqueline married in The Hague.

According to some, he died from the consequences of an abscess in the head, while other sources suggest he had been poisoned.