Agnes of Navarre

Agnes of Navarre (1334–1396), a daughter of King Philip III and Queen Joan II, was raised at the French court as a pupil of the poet Guillaume de Machaut and, by tradition, heroine of his Voir Dit. In 1349 she married Gaston III Fébus, count of Foix, renouncing her Navarre rights.

The marriage was unhappy, and Froissart records how Fébus killed their son Gaston in 1381. Agnes then took refuge at the French court.