Mac Giollachlaoin
Mac GIOLLACHLAOIN—IV—M'Gillecloyne, M'Gillacleyne, M'Killeclyne, Kilcline, Cloyen, Cline, Clyne; 'son of Giolla claon' (deceitful youth); an old surname in Roscommon and Longford.
Alphabetical Index to Irish Surnames
Mac GIOLLACHLAOIN—IV—M'Gillecloyne, M'Gillacleyne, M'Killeclyne, Kilcline, Cloyen, Cline, Clyne; 'son of Giolla claon' (deceitful youth); an old surname in Roscommon and Longford.
Alphabetical Index to Irish Surnames