57%RatingSave Gender Masculine Usage Welsh Expand LinksMeaning & History Welsh form of HILARIUS. Family Tree·DetailsRelated Names Other Languages & CulturesHilarion(Ancient Greek) Hilarius(Ancient Roman) Ilarion(Bulgarian) Hilary(English) Hillar(Estonian) Ilari, Lari(Finnish) Hilaire(French) Ilario(Italian) Ilarion(Macedonian) Ilariy, Illarion(Russian) Ealair, Ellar(Scottish) Hilario(Spanish) Entry updated August 31, 2007 ·