Gallacher

Gallacher is a surname of Gaelic origin, most common in Scotland and among people with Irish ancestry. It is a Scottish variant of Gallagher and is derived from Gaelic personal names such as Ó Gallchobhair or Ó Gallachair, with the spelling reflecting regional pronunciation and Anglicization.

Etymology and variant forms: The name is patronymic, indicating descent from a person named Gallchobhair or Gallachair; variants include Gallagher and other Anglicized spellings.

Distribution and usage: Historically concentrated in western Scotland and Ulster, the name has spread through emigration to the wider Scottish and Irish diaspora and to countries such as Canada, the United States, Australia, and beyond.

See also Gallagher, a closely related surname.