O'Halloran
WIKIMEDIA DISAMBIGUATION PAGE
O hAllmhurain; Ó hAllmhuráin; O'Halloran, William; O'Halloran (disambiguation)
O'Halloran is the surname of the ultimate and at least two distinct Gaelic-Irish families, one in County Galway and another in south-east County Clare linked to the Dál gCais. On occasions it is translated as "stranger" or "from across the sea".