Swain

Irish names tend to vary widely in their spelling and overall form. The original Gaelic form of the name Swain is Mac Suibhne, which is derived from the word "suibhne," which means "pleasant." The surname Swain was first found in County Donegal (Irish: Dún na nGall), northwest Ireland in the province of Ulster, sometimes referred to as County Tyrconnel. The name is derived from Suibhne O'Neill, who was a chieftain in Argyll, Scotland.