In the world, Jo. (Jo. 
) is a very rare masculine first name. The forename Jo. is habitual in South-eastern Asia, particularly Indonesia, where it is a very rare male name. Likewise, Jo. is the last name as well as the forename.
| jo. hieronymus textorius FR (b. 1629) |
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| jo. michael heislmann (b. 1721) |
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| jo. matthias wuzer German artist |
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| jo. baptista novelli IT |
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| jo. mar. 1532–1600) mattius |
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| jo. rentiers |
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