Within the UK and Ireland, the surname Blayney most frequently occurs in Wales where it is carried by 1 in 24,913 people. The majority of those with the family name of Blayney are to be found living in/around Rhondda Cynon Taf County Borough (approx. 5% of all UK Blayney's), Powys and Pembrokeshire. The name can also be found in Ireland with 1 in 84,737 people using it, and England with 1 in 106,832.
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