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Family name Käis (Käis ) , around the globe, is a very rare last name. The last name Käis is characteristic of Northern Europe, particularly Estonia, where it is a rare surname.
Kaeis, and Käiss
Anu, Karl, Mario, Marko, Aigar, Karen, Reigo, Riivo, Laura, Lauri, Marten, Katrin, and Kristjan