Mac Suibhne is a Gaelic patronymic surname of Irish and Scottish origin. It means “son of Suibhne”, an Old Irish personal name possibly derived from subae, meaning “joy” or “pleasure”. The name Suibhne appears in early Irish history and legend, notably in the tale Buile Suibhne (The Madness of Suibhne), where a king named Suibhne is cursed by Saint Rónán Finn and driven to madness. History and Origins The surname Mac Suibhne belongs to Clann Suibhne, a Scottish family who settled in Ulster (modern-day Northern Ireland) in the Middle Ages as gallowglass warriors—mercenaries known for their heavy armor and battleaxes. The family became known for their military service; notable members include Aodh Mac Suibhne, a 16th-century Irish gallowglass, and Eóin Mac Suibhne, a 14th-century figure. Dubhghall mac Suibhne was a 13th-century Argyllian magnate. In modern times, Aodán Mac Suibhne has served as a hurling referee in the 21st century. Anglicised Forms and Variants Over time, Mac Suibhne has been anglicised into numerous forms, including Sweeney, McSweeney, McQueen, Swinney, and others. The Scots Gaelic variant Mac Shuibhne (with lenition) appears in Scottish contexts and has given rise to anglicisations such as McQueen and Mawhinney. Related names include the Scottish MacQueen and McQueen, as well as the roots Suibne and the variant Sweeney. Notable Bearers Dubhghall mac Suibhne (13th-century), Argyllian magnate Aodh Mac Suibhne (16th-century), Irish gallowglass Eóin Mac Suibhne (14th-century), Irish figure Aodán Mac Suibhne (21st-century), hurling referee Key Facts Meaning: “son of Suibhne” Origin: Irish and Scottish Gaelic Type: Patronymic surname Usage regions: Ireland (especially Ulster), Scotland Related names: Sweeney, McSweeney, MacQueen, McQueen, and more