Spaniards often feel surprised when they visualise the renowned drawing reproduced below, ascribed (erroneously as it seems, but that is another story) to Lucas Cornelisz van Kunst, the successful Dutch painter of the Tudor era. A brief glance to John of Gaunt’s portrait suffices to notice the distinctive coat of arms of the English members of the Plantagenet dynasty: three golden passant lions on gules and a few fleur-de-lys. However, there is a small shield right in the middle with the double quartered of castles and lions, a heraldry figure that even today is associated to the official coat of arms of Spain.