Mac Leannacháin
Mac LEANNACHÁIN—IV—M'Clanaghan, M'Claneghan, MacLenaghan, MacLenahan, MacLeneghan, MacLenighan, MacLennon, MacClenaghan, MacClenahan, MacCleneghan, MacClenighan, MacClennon, Clenaghan, &c.; 'son of Leannachán' (diminutive of leannach, cloaked, mantled); an Ulster surname.
Alphabetical Index to Irish Surnames