Mac Fheargail
Mac FHEARGAIL—IV—M'Karachill, MacErrigle, MacArgle, Cargill, Carkill; 'son of Fearghal' (super-valour); also Mag Fheargail, which see; a variant of Mac Fhearghail, which see; an Antrim surname. For unaspirated g, compare with Mac Congail.
Alphabetical Index to Irish Surnames