63%RatingSave Gender Masculine Usage Old Irish [1] Meaning & HistoryExpand Links Old Irish form of Ceallach. Related NamesFamily Tree·Details DiminutiveCellachánOther Languages & CulturesKelly(English) Ceallach, Ceallagh, Kelly(Irish) Sources & References O'Brien, Kathleen M. Index of Names in Irish Annals, available from https://medievalscotland.org/kmo/AnnalsIndex/Masculine/Cellach.shtml.