Family name origins & meanings
- Irish (mainly County Tyrone) : Anglicized form of Gaelic Mac Giolla Chomhghain ‘son of the servant of (Saint) Comhghan’, a personal name composed of the elements comh ‘together’ + gan-, gen- ‘born’, hence a byname for a twin. This name was borne by an 8th-century Irish prince who lived as a monk in Scotland.