Mooney is a surname of Irish origin, primarily an anglicized form of the Gaelic Ó Maonaigh, also seen as O'Mooney. The name means "descendant of Maonaigh," with the personal name Maonaigh deriving from maoin, a Gaelic word meaning "wealth" or "treasure." Thus, the surname Mooney essentially denotes "descendant of the wealthy one." It has various spelling variants such as Moony, Moonie, Mainey, Meaney, and Meeney, reflecting regional pronunciation differences during anglicization. Origins and Historical Context The Mooney family lineage is traced back to ancient Irish kings. According to Irish lore, the family descends from Heremon, one of the brothers who conquered Ireland alongside his brother Herber. Heremon later slew Herber and established a line of kings that includes notable figures such as Malachi II and King Niall of the Nine Hostages. While these legendary origins are not verifiable, they highlight the esteemed place the Mooneys held in Irish tradition. Related Surnames Mooney is closely related to O'Mooney, the direct anglicization of Ó Maonaigh. Other variant forms include Meaney and its Gaelic original Ó Maonaigh. These are part of a broader set of Irish surnames derived from the same root, indicating common ancestral origin. Meaning: "descendant of the wealthy one" (from Gaelic maoin = wealth)Origin: IrishType: SurnameForms: Moonie, Moony, Meaney, Mainey, Meeney, O'Mooney, Ó MaonaighRegions: Ireland, with diaspora in English-speaking countries