Gallagher is an Irish surname that has been adopted as a masculine given name, particularly in English-speaking countries. It represents the Anglicized form of the Irish Gaelic Ó Gallchobhair, meaning “descendant of Gallchobhar.” The personal name Gallchobhar itself derives from the Old Irish elements gall “stranger” and cobar “desiring,” so the name may be interpreted as “stranger-desiring” or “one who desires strangers,” though this likely functioned as a descriptive epithet rather than a literal meaning. The surname Gallagher has deep roots in Irish history, particularly in County Donegal. The Ó Gallchobhair sept belonged to the Cenél Conaill kindred of the Northern Uí Néill, tracing descent from Conall Gulban, a son of Niall of the Nine Hostages. Historically, the Gallaghers were lords of Bannagh and Tír Aodha, and they often served as chiefs and warriors within the O’Donnell lordship. In modern Ireland, Gallagher remains a very common surname, ranking among the top 20 most frequent surnames nationwide. As a given name, Gallagher has seen occasional usage, perhaps influenced by the fame of members such as the American comedian and watermelon-smasher Gallagher (real name Leo Anthony Gallagher Jr.) or the heavyweight boxer Tommy Gallagher. Notable bearers across fields include entertainers and athletes, though it remains less common as a first name than as a surname. Its melodic, lyrical quality and Irish heritage appeal to parents seeking a distinctive name with strong cultural ties. Key facts: Meaning: Descendant of Gallchobhar (“stranger-desiring”) Origin: Irish Gaelic Type: Surname used as given name Usage regions: Irish diaspora (particularly United States, UK, Australia)