Caer: Irish Goddess of Sleep and Dreams
The Irish love god Aonghus fell in love with Caer. Who are we to blame him? She is an exquisite creature, after all her father was Ethal, one of the Tuatha De Nannon.
First Aonghus only dreamed of her until he discovered her identity. But Ethal said that it was not in his power to give her away, as his daughter had become a swan. In modern days you and me would say that that sounded like a cop out, but apparently it was true. If Aonghud could identify her between a rather large flock of swans, he could ask for her hand in marriage. Of course he did.