29
March |  Austria | Berthold, Helmut, Ludolf |  Croatia | Bertold, Eustazije, Jona |  Czechia | Taťána |  Denmark | Jonas |  Estonia | Joakim, Joonas, Kimmo |  Finland | Joni, Jonne, Jonni, Joona, Joonas, Jouni |  France | Gladys, Gwladys |  Hungary | Auguszta |  Italy | Secondo |  Latvia | Agija, Aldonis, Ilma, Ranta |  Lithuania | Almantė, Bertoldas, Manvydas |  Norway | Jonas, Jonatan |  Poland | Cyryl, Czcirad, Eustachiusz, Eustachy, Ostap, Wiktoryn |  Romania | Denia, Marcu |  Slovakia | Miroslav |  Spain | Eustasio |  Sweden | Jens, Jonas |
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