73%RatingSave Gender Masculine Usage Irish, Old Irish [1] Meaning & HistoryExpand Links Diminutive of Cian. This was the name of a 5th-century Irish saint. Related NamesFamily Tree·Details VariantKeenan(Irish) Feminine FormCiannait(Irish) Other Languages & CulturesKian(English) Cian(Irish Mythology) User SubmissionCianan People think this name isRate·Details classic formal upper class natural wholesome strong refined strange complex serious Categories diminutives, saints Sources & References O'Brien, Kathleen M. Index of Names in Irish Annals, available from https://medievalscotland.org/kmo/AnnalsIndex/Masculine/Cianan.shtml.