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Surname Ohalloran (Ohalloran ) , globally, is quite a rare last name. The last name Ohalloran is habitual in Ireland, where it is quite a rare surname, Australia, and New Zealand, where it is a rare surname. In absolute terms, the name is most common in the United States, the United Kingdom, and Ireland.
VARIANT | COUNTRY |
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Ohalloran | United Kingdom, Ireland, Canada, Australia, United States |