Last name Bastard (Bastardo 
, Bastard 
, Бастард) , worldwide, is a common cognomen. The last name Bastard is habitual in Venezuela, where it is quite a common surname, France, where it is quite a rare surname, and the Dominican Republic. Measured by absolute frequency, this name is the most popular in Venezuela, France, and Indonesia. Very seldom, Bastard is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Bastardo | France, Indonesia, Venezuela, United States, Dominican Republic |
| Bastard | Spain, France, Indonesia, Mexico, United States |
| ตะโคตร | Thailand |
| thomas bastard English priest, GB (b. 1565) |
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john pollexfen bastard British Tory politician (1756-1816), GB (b. 1756) |
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edmund bastard British landowner and politician (b. 1758) |
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| william bastard (1727-1782) (b. 1727) |
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| jean baptiste bastard FR (b. 1763) |
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| edmund pollexfen bastard British politician (b. 1784) |
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| john bastard British politician, GB (b. 1787) |
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| étienne germain bastard FR (b. 1786) |
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georges bastard (1851-1914) (b. 1851) |
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e. w. bastard Amateur cricketer (1862-1901) (b. 1862) |
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| john bastard English cricketer and clergyman (1817-1848) (b. 1817) |
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| john pollexfen pownall wade bastard (1818-1886) (b. 1818) |
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| frances j. bastard (born 1824) (b. 1824) |
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| rosa louisa bastard (born 1829) (b. 1829) |
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| william pollexfen bastard (1832-1915) (b. 1832) |
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