86%RatingSave Gender Masculine Usage Croatian, Medieval Slavic [1] Meaning & History Derived from the Slavic element mysli "thought" or moji "my" combined with slava "glory". This was the name of a 9th-century duke of Croatia, also called Mojslav. Name DaysName Days? Croatia: January 16Croatia: July 12 Categories medieval, nobility Sources & References Goldschmidt, Paul. A Dictionary of Period Russian Names, available from https://heraldry.sca.org/names/paul/.