Casimir, an English, French and Latin form of the Polish name Kazimierz. It may mean "someone who destroys opponent's prestige/glory during battle", and be derived from the Slavic elements: kazić "to destroy" and mir "peace, prestige, world". Also, some researches translate this name as "the one who reveals or establishes peace". Some sources give the meaning as "proclamation of peace". Several Polish kings have borne this name, including Casimir III the Great and Saint Casimir, a patron saint of Poland and Lithuania. The name was imported into Western Europe via Germany, where it was borne by some royalty. Feminine forms are: Casimira, Kazimiera.