"Teithi Hen, the son of Gwynhan—(his domains were swallowed up by the sea, and he himself hardly escaped, and he came to Arthur, and his knife had this peculiarity, that from the time that he came there no haft would ever remain upon it, and owing to this a sickness came over him, and he pined away during the remainder of his life, and of this he died)..." (Study of Celtic Literature, Arnold, 1905)