Etymology and OriginFlanagan is a masculine first name of Irish origin, derived from the Irish surname Ó Flannagáin. The surname was also Anglicized as Flanagin, Flannagan, Flanigan, or Flannigan. This patronymic means “descendant of Flannagán,” where Flannagán is a personal name formed from Irish flann “blood red” combined with a diminutive suffix. The vibrant red color might have originally referred to hair or complexion, a common motif in Irish naming.Notable BearersAs a given name, Flanagan is uncommon but has been used in modern times, often honoring family surnames. Notable individuals with the surname include Eion Flanagan (Irish television host), and fictional characters such as Flanagan from the movie The Village. However, the name's use as a first name remains rare.DistributionAccording to the 2010 United States Census, the surname Flanagan ranks 1,134th in frequency, with over 30,000 individuals bearing it in the U.S. As a first name, it appears more frequently among Irish-American families who use surnames as given names. The name also appears as a place name: Flanagan, a village in Illinois, USA.Key FactsMeaning: Blood red (from Irish flann)Origin: Irish, derived from Ó FlannagáinType: Masculine first name, transferred from surnameUsage Regions: Primarily English-speaking countries, especially among Irish diaspora