Last name Rainwater (Rainwater 
, น้ำฝน) , around the world, is quite a common cognomen. The surname Rainwater is characteristic of Luxembourg, where it is quite a rare surname, the United States, and New Zealand, where it is a rare surname. Not in comparison with a country's population, the name is most common in the United States, Canada, and Luxembourg.
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| Rainwater | United Kingdom, Canada, United States, New Zealand, Luxembourg |
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leo james rainwater American physicist, US (b. 1917) |
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gregg rainwater American actor, US (b. 1966) |
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| jody rainwater American bluegrass musician and radio personality, US (b. 1920) |
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| marvin rainwater American country and rockabilly singer and songwriter (1925-2013), US (b. 1925) |
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paul rainwater American politician |
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| frank hays rainwater (b. 1921) |
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| janette rainwater (b. 1923) |
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| richard rainwater American businessman, US (b. 1943) |
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| rotimi rainwater American writer, US (b. 1970) |
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| c.a. rainwater architect |
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| justus rainwater college basketball player (2020–2020) Florida Gulf Coast |
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| jimmie rainwater college basketball player (1996–1999) Portland |
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| chase rainwater Ph. D. University of Florida 2009 |
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| rainwater d researcher |
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| kimberly l. rainwater researcher |
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