Kearlin, Kearline, Kearlynd, Carolan, Carrolan, Carolyn, Carolyne, Caroline, Carolynde, Caraline, Carroline, Carlan, Carland, Carlon, Carlone, Karolin, Karolan, Karrolin and many more. First found in County Limerick , where they held a family seat from ancient times.   More More about the O'Carlin History... Our PDF Extended History includes the early history!