In
Irish mythology, 'Fionnuala' (from 'fionn ghualainn' or fair-shouldered) was the daughter of
Lir of the
Tuatha de Danaan. In the legend of the
Children of Lir, she was
changed into a
swan and
cursed by her stepmother, Aoife, to wander the
lakes and
rivers of
Ireland, with her brothers
Fiachra,
Conn and
Aodh, for 900 years until saved by the marriage of Lairgren, son of Colman, son of Cobthach, and Deoch, daughter of Finghin, which union broke the curse (http://mockingbird.creighton.edu/english/micsun/IrishResources/childlir.htm). 'The Song of Fionnuala', with lyrics by
Thomas Moore (http://www.james-joyce-music.com/song02_lyrics.html) speaks of her wanderings.