The baby name Boleslaus is a Male name , 3 syllables long and is pronounced /ˌboʊləˈslɑːs/ (BOH-lə-SLAHSS); Polish cognate Bolesław: /bɔˈlɛswaf/ (bo-LES-vahf).
The baby name Boleslaus is a Male name , 3 syllables long and is pronounced /ˌboʊləˈslɑːs/ (BOH-lə-SLAHSS); Polish cognate Bolesław: /bɔˈlɛswaf/ (bo-LES-vahf).
Boleslaus is Czech, Slavic in Origin.
Boleslaus is the Latinized and Germanized form of the West Slavic name Bolesław/Boleslav, from Proto-Slavic bole- “more, great” + slava “glory, fame,” giving the sense “greater glory,” “much glory,” or “very famous.” The feminine counterpart is Bolesława/Boleslava. The name appears across Central and Eastern Europe and is cognate in sense with names ending in -slav/-slawa.
Medieval usage peaked among rulers: Poland’s Piast kings and dukes include Bolesław I the Brave, Bolesław II the Generous, and Bolesław III Wrymouth; Bohemia had Boleslav I the Cruel and Boleslav II the Pious. Revived during 19th-century national awakenings, it remains rare today outside Slavic regions but is still recognized in Poland, Czechia, Slovakia, and neighboring countries. Variants: Polish Bolesław, Czech/Slovak Boleslav, Russian/Ukrainian Болеслав, Lithuanian Boleslovas, German and Latin Boleslaus. Diminutives include Bolek, Bolko, and Bolo.
Boleslaus doesn't appear in any of the birth registries or name datasets we track. That's typically a sign of a rare name, a regional or traditional one, or a modern coinage. Either way, it's a name very few children share.
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