Within the UK and Ireland, the surname Holley most frequently occurs in Wales where it is carried by 1 in 6,526 people. The majority of those with the family name of Holley are to be found living in/around Rhondda Cynon Taf County Borough (approx. 4% of all UK Holley's), City and County of Cardiff and Caerphilly County Borough. The name can also be found in England with 1 in 19,816 people using it.
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