Family name Ruether (Ruether 
) , in all the world, is quite a rare surname. The family name Ruether is habitual in Iceland, where it is quite a rare surname, Germany, and Austria, where it is a rare surname. In absolute terms, this name is the most popular in Germany, the United States, and Austria. Much less frequently, Ruether is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Ruether | Austria, Germany, Iceland, Canada, United States |
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richard august ruether politician in Massachusetts, US, US (b. 1896) |
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| rosemary radford ruether American theologian, US (b. 1936) |
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| mike ruether American football player, US (b. 1962) |
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| roland ruether (b. 1967) |
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| andreas ruether researcher |
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| chris ruether |
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