Last name Weilbacher (Weilbacher 
) , across the world, is a rare surname. The family name Weilbacher is habitual in Germany, where it is a rare surname, Switzerland, and the United States.
| VARIANT | COUNTRY |
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| Weilbacher | Italy, Switzerland, France, United States, Germany |
| robert weilbacher Micronesian politician (b. 1948) |
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| ellen weilbacher (b. 1952) |
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| b.f. weilbacher botanist |
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| peter m. weilbacher researcher |
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| britta weilbacher |
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| andrea weilbacher |
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