4
March |  Austria | Edwin, Humbert, Kasimir |  Bulgaria | Gerasim |  Croatia | Eugen, Kazimir, Miro, Natko |  Czechia | Stela |  Denmark | Adrianus |  Estonia | Almar, Eimar, Elmar, Elmer, Elmet, Elmo |  Finland | Ari, Arsi, Atro |  France | Casimir |  Germany | Kasimir |  Hungary | Kázmér |  Italy | Casimiro |  Latvia | Alise, Auce |  Lithuania | Daina, Daugvydas, Kazimieras, Vaclava |  Norway | Ada, Adrian |  Poland | Adrian, Adrianna, Arkadiusz, Arkady, Eugeniusz, Kazimierz, Lew, Lucja, Łucja, Lucjusz, Wacław, Wacława |  Romania | Gherasim, Teodor |  Slovakia | Kazimír |  Spain | Casimiro |  Sweden | Adrian, Adriana |
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