Prior to changes introduced by Jan Hus (in this case, the introduction of the háček), Czech shared digraphs that are still used in Polish. "Cz" is was ultimatel

Prior to changes introduced by Jan Hus (in this case, the introduction of the háček), Czech shared digraphs that are still used in Polish. "Cz" is was ultimately replaced with "č". It is possible that the archaic form somehow made it into English and survived (though my sources tell me that the spelling has only been present in English since the 17th century, or after Hus' reforms).