Yvaine (ee-VAYN / iˌveɪn /), a female name of neomedieval coinage, emerges at the nexus of Arthurian legend and Latinate linguistics; its nomenclatural genesis can be traced to the Old French knight Yvain—whose name, itself perhaps from Proto-Celtic *ywanā “yew,” was Latinized as Ibanus—and has been reimagined by modern storytellers as the softly luminous feminine form Yvaine. Connoting the “evening star” through its evocative echo of the Latin stella vespertina, Yvaine weaves a chiaroscuro of shadow and radiance, a metaphorical constellation that speaks to an aspirational identity at once steeped in medieval lore and suffused with starlit hope. Although statistically scarce—registering between 929th and 981st in the U.S. birth rankings since 2008, with the dry irony that a mere five newborns were christened thus in 2024—its enduring yet understated presence underscores a scholarly penchant for names that marry historical gravitas with esoteric allure. With a phonetic contour imbued with dignitas and a literary resonance that invites narratives of resilience from dusk to dawn, Yvaine offers parents an elegant tapestry on which to inscribe their child’s story.