Within the UK and Ireland, the surname Heneghan most frequently occurs in Ireland where it is carried by 1 in every 3,264 people. The majority of those with the family name of Heneghan are to be found living in/around Connaught, Leinster and, to a lesser extent, Munster. The name can also be found in England with 1 in 61,314 people using it.
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