Donough

Donough is a surname of Irish origin. It is generally considered an Anglicized form of the Gaelic name Donnchadh, or Donnchadha, which is composed of the elements donn, meaning "brown" or "chieftain," and cath, meaning "battle." Thus, Donnchadh roughly translates to "brown chieftain" or "chieftain of the battle." The name has been borne by several historical figures in Ireland, notably Donnchad mac Briain, High King of Ireland in the 11th century.

Variations of the surname include Donohue, Donoghue, Doneghy, and many others, reflecting the diverse ways in which Gaelic names were anglicized. The surname is found primarily in Ireland and among Irish diaspora communities around the world.