77%RatingSave Gender Masculine Usage Irish Meaning & History Probably from Old Irish cell meaning "church" combined with a diminutive suffix. This was the name of a 7th-century Irish saint who evangelized in Franconia. He was martyred in Würzburg. Related NamesFamily Tree·Details VariantsCillín, Kilian, KillianOther Languages & CulturesKilian, Killian, Kylian, Kyllian(French) Kilian, Lian(German) Kilian(Spanish) User SubmissionCillian PopularityDetails Last ranked #223 in 2022 England and Wales Last ranked #9 in 2023 Ireland Last ranked #4 in 2023 Northern Ireland Last ranked #99 in 2023 Scotland Last ranked #593 in 2023 United States People think this name isRate·Details classic formal upper class natural wholesome strong refined strange complex serious Categories martyrs, saints, Squishmallows, trendy, uncertain etymology, victims