Casimir — English form of the Polish name Kazimierz, derived from the Slavic element kaziti "to destroy" combined with miru "peace, world". Four kings of Poland have borne this name, including Casimir III the Great, who greatly strengthened the Polish state in the 14th century. It was also borne Saint Casimir, a 15th-century Polish prince and a patron saint of Poland and Lithuania.
Saintly namesake: Saint Casimir was a 15th-century prince of Poland and Lithuania, known for his piety and dedication to the poor. He is the patron saint of Lithuania and youth. (March 4 · 15th century)
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