About the Calahan Surname

A coat of arms belongs to a particular family line rather than to everyone named Calahan, so the heraldry linked to Callahan is a starting point, not an automatic right.

Family name meaning

If your family name is Calahan, its origin lies with Callahan, an Irish surname. Taken at its root, Calahan points to “Descendant of Ceallachán”.

Without the “l” of Callahan, Calahan is a simpler written form of the same name. 2,207 Americans were listed as Calahan in the 2010 census.

Want more than a summary? See the Calahan family name pack.