Chaucer's Love Birds
It was not until the 14th century that this Christian feast day became definitively associated with love. According to UCLA medieval scholar Henry Ansgar Kelly, author of Chaucer and the Cult of Saint Valentine, it was Chaucer who first linked St. Valentine's Day with romance.
In 1381, Chaucer composed a poem in honor of the engagement between England's Richard II and Anne of Bohemia. As was the poetic tradition, Chaucer associated the occasion with a feast day. In "The Parliament of Fowls," the royal engagement, the mating season of birds, and St. Valentine's Day are linked: