[5] In addition, he was popular with everyone at his father's court, and it was widely believed that the French nobility of the time would have much preferred to have him as the Dauphin as opposed to his downcast brother, Henry, who never seemed to recover from his years of captivity in Spain.

Charles fought and captured Luxembourg, but then fearful that he would miss the glory of Perpignan, which was under siege by the Dauphin Henry, he headed south.

[10] Henry was offended, and he stated that he had been generous in offering an heiress "of most certain title, without remainder of querel to the contrary"[11] to a younger son.

In May 1536, Anne Boleyn was executed and Elizabeth was declared illegitimate, permanently ending any prospects of a marriage to Charles.

Infanta Maria of Spain was the daughter of Emperor Charles V and Isabella of Portugal, and she would bring the Netherlands or the Low Countries of Franche-Comté as her dowry.

As the groom's father, Francis I agreed to endow Charles with Angoulême, Châtellerault, Bourbon and Orléans.

The Peace of Crépy deeply offended Charles' elder brother, the Dauphin Henry, and his wife, Catherine de' Medici.

Stating that "no son of a King of France ever died of plague", Charles entered some of the infected houses with his brother.

Later that evening, after dining with his father and brother, he took suddenly ill, suffering from pain, a high fever, vomiting and shaking limbs.