Last name Showalter (Showalter 
, Шоуолтер) , worldwide, is quite a common cognomen. The surname Showalter is habitual in the United States, where it is quite a rare surname, Canada, where it is a rare surname, and Belgium. Measured by absolute frequency, it is the most numerous in the United States, Canada, and Japan.
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| Showalter | Japan, United Kingdom, Belgium, United States, Canada |
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john william showalter United States federal judge, US (b. 1844) |
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anthony j. showalter American composer (1858-1924), US (b. 1858) |
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nellie showalter American chess player, US (b. 1870) |
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| daniel showalter American politician, US (b. 1830) |
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| reuben b. showalter American politician, US (b. 1842) |
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| joseph baltzell showalter American politician, US (b. 1851) |
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max showalter American actor (1917-2000), US (b. 1917) |
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| amos martin showalter botanist (1891-1968) (b. 1891) |
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elaine showalter American literary critic, feminist, and writer on cultural and social issues, US (b. 1941) |
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mark r. showalter American astronomer, US (b. 1957) |
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| albert k. showalter American meteorologist (1908-1986), US (b. 1908) |
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| hiram m. showalter (b. 1903) |
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| johnny showalter American gridiron football player, US (b. 1920) |
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michael showalter American comedian, US (b. 1970) |
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| dennis showalter American historian, US (b. 1942) |
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