Within the UK and Ireland, the surname Gaughan most frequently occurs in Ireland where it is carried by 1 in every 4,735 people. The majority of those with the family name of Gaughan are to be found living in/around Connaught, Leinster and, to a lesser extent, Ulster. The name can also be found in Scotland with 1 in 10,483 people using it, and England with 1 in 31,221.
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