Type Word Usage Old Irish Meaning & History Old Irish word meaning "raven" [1] . Related ItemsFamily Tree ·Details Given Name DescendantsFiacre (French) Fiachra (Irish) Fiachna, Fiachra, Fiachrae (Irish Mythology) Fiachna, Fiachrae (Old Irish) Sources & ReferencesShow Inline Numbers Hide Inline Numbers Matasović, Ranko. Etymological Dictionary of Proto-Celtic. Brill, 2009, page 415. Share on Facebook Share on Twitter Entry updated May 26, 2026