Book Four of the Chronicles of the Cheysuli.
Niall is Donal's heir, but, at 19, he still has no lir, and the Cheysuli will not accept him. Homana won't accept him either. He sails to Atvia to get his bride and is shipwrecked on Erinn, where he falls in love with Dierdre. He must leave her to marry Gisella, who is insane, but Dierdre gives birth to twins. The Ihlini send a plague which almost gets Ian. Niall gets his lir, the wolf Serri, and sets out to stop the plague, Succeeds, but loses an eye. Donal loses his lir and must sacrifice himself. Gisella is put aside because of her madness. Dierdre comes at the end.
Good volume. Moving.