Chapter XXII: Book II

1. _Cid dia mboi loṅges mac nUsnig._ “What caused the exile of the Sons of Usna?” L.L. 259ᵇ-261ᵇ. This text has been edited by Dr. Windisch, I.T., first series.

2. _Oided mac nUisnig._ “The Tragic Deaths of the Sons of Usna,” edited by Dr. Stokes, I.T., Zweite serie, 2 Heft.

3. _Déirdre_, edited by Dr. Douglas Hyde from a manuscript in the Belfast Museum, Zeitschrift für Celtische Philologie, vol. ii.

4. _The Glenmasan Manuscript_, Advocates’ Library, Edinburgh. This MS. is invaluable for the account which it gives of the events that occurred between the deaths of the sons of Usna and the opening of the Táin. Some years ago I began to make a copy of it; but I was happily saved from continuing this difficult labour by its gradual appearance, edited by Professor Mackinnon, in the _Celtic Review_.

5. _Caithréim Conghail Cláiringnig_, “Martial Career of Conghal Cláiringhneach,” edited by P. M. MacSweeney, M.A., I.T.S., vol. v. This tells us also of the “martial career” of Fergus in the days before the exile of the Sons of Usna.

It is necessary to know the story of the children of Usna in order to understand the position of Fergus in the Táin. In supposing Lowercam to be exiled in Connaught, and in making her the narrator of the story, I again merely adopt the characteristic Gaelic device.