Criseyde is a variant form of Criseida, a name used by the English poet Geoffrey Chaucer in his 14th-century epic poem 'Troilus and Criseyde.' The name is associated with a character in Medieval and Renaissance retellings of the Trojan War, often depicted as a Trojan woman who becomes an archetype of a faithless lover due to her shifting allegiances between Troilus and Diomedes.