Within the UK and Ireland, the surname Cavanagh most frequently occurs in Ireland where it is carried by 1 in every 3,962 people. The majority of those with the family name of Cavanagh are to be found living in/around Ulster, Leinster and, to a lesser extent, Munster. The name can also be found in Scotland with 1 in 6,779 people using it, and England with 1 in 10,446.
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