67%RatingSave Gender Masculine Usage Ancient Roman Pronounced Pron. KIE-lee-oos [key·IPA] Meaning & History Roman family name that was derived from Latin caelum meaning "heaven". Related NamesFamily Tree·Details Feminine FormCaeliaOther Languages & CulturesCelio(Italian) Célio(Portuguese) Celio(Spanish) People think this name isRate·Details classic formal upper class natural strong strange complex serious Categories celestial, heavenly, isograms, nomina