Within the UK and Ireland, the surname Antonio most frequently occurs in Wales where it is carried by just 1 in every 112,107 people. The majority of those with the family name of Antonio are to be found living in/around City and County of Cardiff and City and County of Swansea. The name can also be found in England with just 1 in every 121,961 people using it, and Ireland with 1 in 150,938.
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