Donnchadh Ó Corráin writes that this title "was first given it by Eugene O'Curry in his transcript of the text. It has no title in the earliest copy, that in the Book of Lismore. A variety of titles occurs in the late manuscript tradition in which the tale is normally divided into two parts entitled respectively 'Cathughadh Ceallachain re Lochlannuibh' and 'Toruigheacht na tTaoiseach air Cheallachain' ( Ó Corráin, 'Caithréim' p.1 (fn 1)) Ó Corráin, Donnchad (1974). "Caithréim Chellacháin Chaisil: History or Propaganda?". Ériu. 25. Royal Irish Academy: 1–69. JSTOR30008432.
Ó Corráin, pp.1–3 Ó Corráin, Donnchad (1974). "Caithréim Chellacháin Chaisil: History or Propaganda?". Ériu. 25. Royal Irish Academy: 1–69. JSTOR30008432.
