Aideen is an Anglicized form of the Irish name Éadaoin, itself a modern spelling of the Old Irish Étaín. Derived from a diminutive of Old Irish ét meaning "jealousy" or "passion", the name is deeply rooted in Irish mythology. Mythological Background In Irish mythology, Étaín is the central figure of the 9th-century tale Tochmarc Étaíne ("The Wooing of Étaín"). Initially the wife of the god Midir, she was transformed into a fly by Midir's jealous first wife Fuamnach. After being accidentally swallowed, Étaín was reborn and later married the high king Eochaid Airem, unaware of her past. Midir eventually reclaimed her after defeating Eochaid in a game of chess. This story, part of the Mythological Cycle, is considered one of the oldest and richest tales of Irish legend. T. F. O'Rahilly, a noted scholar, identified Étaín as a sun goddess. Notable Bearers The name Aideen (as an Anglicized form) appears in historical and literary contexts. One prominent bearer was Aideen O'Brien, an Irish republican and member of Cumann na mBan, who was killed during the Irish Civil War in 1923. Her story is remembered in Republican songs and memorials. Cultural Significance Aideen, like Étaín, is primarily used in Ireland and among the Irish diaspora. Variants include Edana and Eadán. The name's mythological associations give it a timeless quality, linking modern bearers to the rich heritage of Irish legend. Meaning: "passion, jealousy" (from Old Irish ét) Origin: Irish (Anglicized form of Éadaoin) Type: Female given name Usage regions: Ireland