Surname Mcclay (Mclay 
, Mcclay ) , in the entire world, is quite a common family name. The family name Mcclay is characteristic of New Zealand, where it is quite a rare surname, Australia, and the United Kingdom. In absolute terms, it most frequently occurs in the United States, the United Kingdom, and Australia. Very seldom, Mcclay is the forename as well as the last name.
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| Mclay, Mcclay | Australia, United States, United Kingdom, New Zealand, Canada |
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todd mcclay New Zealand politician, NZ (b. 1968) |
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andrew mcclay Irish actor, IE (b. 1975) |
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| roger mcclay New Zealand politician, NZ (b. 1945) |
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| wilfred m. mcclay American historian, US (b. 1951) |
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| david alexander mcclay Anglican bishop (b. 1959) |
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| will mcclay American football player and coach, US (b. 1966) |
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| andy mcclay Scottish footballer (born 1972), GB (b. 1972) |
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| john mcclay Peerage person ID=483808 |
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| rebecca mcclay researcher (ORCID 0000-0003-3237-1802) |
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| carrie-anne mcclay researcher |
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| sarah mcclay Peerage person ID=483809 |
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| catherine mcclay electrical engineer |
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| david r mcclay researcher (ORCID 0000-0001-8824-2183) |
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| kenneth r. mcclay researcher |
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| douglas tillman mcclay Ph.D. Harvard University 1940 |
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