Kerrin, of Irish origin, is a unisex given name that translates to 'dark-haired' or 'little dark one'. It's derived from the Irish word 'ceirnín', which combines 'ceann' meaning 'head' and 'fionn' meaning 'white', hence the association with dark hair. Kerrin gained popularity in recent years, particularly as a female name, but it has been used for both boys and girls throughout history.
"The name Kerrin had its peak popularity between 1958 and 1969, with over 20 births per year. It started declining from the late 70s, dropping below 10 births per year by the mid-80s, and continued to decrease until it reached a low of 5-7 births per year after 1999."