Cognomen Blaylock (Blaylock 
) , in the world, is a common family name. The cognomen Blaylock is characteristic of the United States, where it is quite a rare surname, the United Kingdom, where it is a rare surname, and New Zealand. In absolute terms, it is the most numerous in the United States, the United Kingdom, and Canada.
| VARIANT | COUNTRY |
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| Blaylock | United Kingdom, Indonesia, United States, Canada, Egypt |
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keith blaylock Soldier, US (b. 1836) |
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louis blaylock American mayor (1849-1932), US (b. 1849) |
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mattie blaylock American prostitute, US (b. 1850) |
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selwyn g. blaylock Canadian geologist (1879-1945) (b. 1879) |
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| harry blaylock jockey, CA (b. 1859) |
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| harry woodburn blaylock Canadian lawyer and businessman (1878–1928), CA (b. 1878) |
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| thomas todd blaylock (b. 1876) |
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| blaylock atherton American politician, US (b. 1900) |
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| jeannie blaylock American journalist (b. 1901) |
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| noel william blaylock (born 1907) (b. 1907) |
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| jack blaylock (born 1909) (b. 1909) |
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| len e. blaylock American politician in Arkansas (1918-2012), US (b. 1918) |
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| fred blaylock American baseball player, US (b. 1919) |
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| chet blaylock American politician (1924-1996), US (b. 1924) |
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| marv blaylock American baseball player, US (b. 1929) |
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