Agnes of Navarre (c. 1335–1397), Countess of Foix, was the granddaughter of French King Louis X and married Gaston Fébus, Count of Foix, in 1349. Because of a supposed dispute over the dispensation of her dowry, Fébus sent her away in 1362. Though the couple may have been estranged for a while before 1362, the split may have also been due to conflict between Fébus and Agnes’ brother, Charles II of Navarre. The couple lived apart for the rest of their lives. In 1391, after Fébus’ death, Agnes underwent an inquiry concerning her losses after being forced from her home. Scholars believed that Agnes was the mistress and female inspiration for Guillaume de Machaut’s poem Le Livre du Voir-Dit. Because of this, a collection of poems was attributed to her entitled Poésies d’Agnès de Navarre-Champagne, dame de Foix (1856). Later, the woman was identified as Peronne d’Armentières, and some contemporary scholars believe the woman in the poem is fictional.