Within the UK and Ireland, the surname Geoghegan most frequently occurs in Ireland where it is carried by 1 in every 1,527 people. The majority of those with the family name of Geoghegan are to be found living in/around Leinster (approx. 41% of all UK Geoghegan's), Connaught and Munster. The name can also be found in England with 1 in 31,256 people using it.
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