The story goes back to the time of King Jaime I. When he was preparing to recover Valencia from the Moors, a bat alighted on top of his tent. This was considered an omen of success, and the king ordered that a bat be added to his coat of arms.
故事要從很早以前說起，在海門一世國王（Rey Jaime I）正準備進攻瓦倫西亞前，一隻蝙蝠剛好停在統帥帳篷頂上，當下被認為是攻城成功的吉兆，國王乃指定將它畫入盾牌中。