アイルランド神話では、'''カー・イボルメース'''(Caer Ibormeith)はコナハトのシド・ウアムイン(Sid Uamuin)の王子エサール・アヌブアイル(Ethal Anbuail)の娘である。
In [[Irish mythology]], '''Caer Ibormeith''' was the daughter of Prince [[Ethal|Ethal Anbuail]] of [[Sid Uamuin]] in [[Connacht]]. In [[Óengus]]’s dream, which lasted over a year, Caer Ibormeith stood beside his bed though when he reached out for her, she would disappear.<ref>{{Cite news|url=https://aliisaacstoryteller.com/2015/10/06/the-aisling-not-so-sweet-dreams-in-irish-mythology/|title=The Aisling {{!}} Not so Sweet Dreams in Irish Mythology|date=2015-10-06|work=aliisaacstoryteller|access-date=2017-12-09|language=en-GB}}</ref> Every alternate [[Samhain]] she would turn to human form for one day, which begins at sunset, and after that, she would revert into being a [[swan]], in which form she would remain for a year before becoming human again the following Samhain.