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Cognomen Kartau (Kartau
) , in the entire world, is a rare family name. The surname Kartau is habitual in Northern Europe, particularly Estonia, where it is quite a common surname, Latvia, where it is a rare surname, and Finland. In absolute terms, it is the most numerous in Estonia, Nigeria, and Latvia. Much less frequently, Kartau is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kartau | Estonia, Latvia, Nigeria, Finland, Germany |