The name is attested as Fluvium Vendre in the 10th century, and as Flumen Vendee and Vendeia by the 11th century. According to Pierre-Henri Billy, the name ultimately derives from the Celtic toponym*vindo- meaning white or brilliant in a sacred context (as in the Modern Welshgwyn/wyn). The name likely originates in Proto-Celtic or Gaulish, but may also have originated in the Gallo or Old Breton languages.[2]
It flows through the following departments and towns: