O'Carroll is a surname of Irish origin, commonly associated with the Gaelic name "O'Ceallach," meaning "descendant of Ceallach." The name is linked to various historical figures and families in Ireland, particularly in counties like Limerick and Tipperary. In modern times, O'Carroll is also recognized through popular culture, notably in the British television series Mrs. Brown's Boys, created by Brendan O'Carroll. The show features a comedic portrayal of a matriarch named Agnes Brown, played by O'Carroll himself, and has gained a significant following for its humor and relatable family dynamics.