Family name Unrau (Unrau 
) , in the world, is quite a rare surname. The family name Unrau is characteristic of Canada, where it is quite a rare surname, Paraguay, and New Zealand. Measured by absolute frequency, it is commonest in Canada, Germany, and the United States.
| VARIANT | COUNTRY |
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| Unrau | Mexico, Paraguay, United States, Germany, Canada |
| john unrau author (20th century) (b. 1901) |
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| trudie unrau (b. 1919) |
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| don unrau (b. 1950) |
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| yvonne a. unrau (b. 1965) |
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| john m. unrau (1916-1961) |
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| ronald unrau Ph.D. University of Toronto 1992 |
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| peter j unrau researcher |
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| rona unrau |
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