Finbar is the only son of Aisling and Sean. He is named after Finbar , the man with the swan's wing. He is born in Heir to Sevenwaters, and just days after his birth is taken by the Fair Folk in an attempt to lure Cathal back to the Otherworld. Clodagh sets out on a quest to rescue him. Finbar's soujourn in the Otherworld changes him, but how he is changed is unknown. Finbar is a seer, and so is wiser and more serious that other children of his age.