Cognomen Ubach (Ubach 
) , in the entire world, is a rare last name. The last name Ubach is characteristic of Andorra, where it is quite a common surname, Uruguay, where it is quite a rare surname, and Spain. Measured by absolute frequency, the name is most common in Spain, France, and Argentina. Likewise, Ubach is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Ubach | Spain, Mexico, France, Argentina, Germany |
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anthony ubach American priest, US (b. 1835) |
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francisco ubach vinyeta Spanish writer and poet (1843-1913), ES (b. 1843) |
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maría de la visitación ubach Spanish painter (1850-1925), ES (b. 1850) |
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| josé ubach Spanish author, ES (b. 1865) |
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| mercedes ubach Spanish composer, ES (b. 1878) |
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| jaume magre i ubach politician, ES (b. 1890) |
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maria ubach font politician of Andorra, AD (b. 1973) |
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alanna ubach American actress, US (b. 1975) |
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montserrat ubach ES |
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| antoni ubach (b. 1944) |
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| miguel vila ubach equestrian, ES (b. 1972) |
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| mercè ubach (b. 1965) |
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| wim ubachs researcher |
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| toni masana i ubach Catalan politician, ES |
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| felip ubach |
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