For this was on seynt Volantynys day Whan euery bryd comyth there to chese [choose] his make [mate].
Parlement of Foules (1382) by Geoffrey Chaucer.
Je suis desja d’amour tanné Ma tres doulce Valentinée…

(Charles d’Orléans, Rondeau VI, lines 1–2;
a fifteenth-century rondeau written by Charles, Duke of Orleans to his “valentined” wife)