(O’)Herlihy, ó hIarlaithe
A Gaelic surname meaning descendant of Iarlaithe (which is anglicised Jarlath). An ecclesiastical sept who were hereditary erenaghs of St. Gobnait’s church at Ballyvourney, in Cork. In 1890 the surname was principally found in Cork and Kerry, and the estimated number of bearers was 1,880.