Surname Blaxter (Blaxter 
) , around the world, is a very rare cognomen. The family name Blaxter is habitual in Australia, where it is a very rare surname, the United Kingdom, and New Zealand. In absolute terms, it most frequently occurs in the United Kingdom, Australia, and the United States. More frequently, Blaxter is the forename as well as the last name.
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| Blaxter | Australia, United Kingdom, United States, New Zealand, Democratic Republic of the Congo |
| kenneth william blaxter British colonial administrator (b. 1895) |
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| kenneth blaxter British nutritionist (1919-1991), GB (b. 1919) |
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| mildred blaxter sociologist (1925–2010), GB (b. 1925) |
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| loraine blaxter British educationalist (b. 1945) |
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| mark blaxter researcher |
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