Cath Muighe Tuireadh. The Second Battle of Magh Tuireadh / Ed. B. Ó Cuív. Dublin, 1945.
Cath Ruis na Ríg for Bóinn / Ed. E. Hogan. Dublin, 1892.
The Celtic Heroic Age / Ed. J. Koch, J. Carey. Andover, 1997.
The Celtic Heroic Age. Literary Sources for Ancient Celtic Europe & Early Ireland & Wales / Ed. J. T. Koch & J. Carey. 2nd edition. Andover, Aberystwyth, 2003.
Chronicum Scotorum: A Chronicle of Irish Affairs, from the Earliest Times to A. D. 1135, with a Supplement Containing the Events from 1141 to 1150 / Ed. Henessy W. London, 1866.
Die Chronik der Böhmen des Cosmas von Prag / Ed. B. Bretholz, W. Weinberger // Monumenta Germaniae historica. Scriptores rerum Germanicarum, Nova series 2. Berlin, 1923.
Cóir Anmann: A late Middle Irish Treatise on Personal Names, Part 1. Irish Texts Society LIX / Ed. S. Arbuthnot. London, 2005.
The Colloquy of the two Sages / Ed. W. Stokes // RC, 26, 1905.
Compert Conchobuir – The Conception of Conchobur / Ed. K. Meyer // RC, 6, 1883—1885.
Compert Con Culainn and other stories / Ed. A. G. van Hamel. Dublin, 1933. Compert Mongáin and Three Other Early Mongán Tales (Medieval and Modern Irish Texts 5) / Ed. N. White. Maynooth, 2006.
Corpus Genealogiarum Hiberniae / Ed. M. A. O’Brien. Dublin, 1962.
Corpus iuris hibernici. Vol. 1—2 / Ed. D. Binchy. Dublin, 1978.
Councils and Ecclesiastical Documents relating to Great Britain and Ireland 2.2 / Ed. Haddan, Stubbs. Oxford, 1878.
Críth Gablach / Ed. D. A. Binchy. Dublin, 1941.
Da Choca’s Hostel / Ed. W. Stokes // RC, 21, 1900.
Death of Crimthann, Son of Fidach, and the Adventures of the Sons of Eochaid Muigmedon / Ed. W. Stokes // RC, 24, 1903.
The Death-Tales of the Ulster Heroes / Ed. K. Meyer. Dublin, 1906.
De chophur in da muccida / Ed. U. Roider. Innsbruck, 1979.