45%RatingSave Gender Masculine Usage Ancient Greek [1] Scripts Ἱλαρίων(Ancient Greek) Meaning & History Derived from Greek ἱλαρός (hilaros) meaning "cheerful". This was the name of a 4th-century saint, a disciple of Saint Anthony. Related NamesFamily Tree·Details Other Languages & CulturesHilarius(Ancient Roman) Ilarion(Bulgarian) Hilary(English) Hillar(Estonian) Ilari, Lari(Finnish) Hilaire(French) Ilario(Italian) Ilarion(Macedonian) Ilariy, Illarion(Russian) Ellar(Scottish) Ealar(Scottish Gaelic) Hilario(Spanish) Ilar(Welsh) User SubmissionHilarión PopularityDetails Last ranked #489 in 1948 France Name DaysName Days? Croatia: October 21 Categories ascetics, emotions, feelings, happiness, joy, Orthodox saints Sources & References Lexicon of Greek Personal Names, available from https://www.lgpn.ox.ac.uk/publications/.