Zwentibold m. A Latinization of Old Church Slavic Свѧтопълкъ, from Slavic svet, sviat, from Proto-Slavic *světъ, from Proto-Indo-European *ḱweytos 'bright, shine' + Polish pułk 'regiment'. The Latin spelling of the deuterotheme was influenced by Old High German bald 'bold'.
The name of two 9th C rulers of Moravia, a 9th C king of Lotharingia and saint, two 11th C grand princes of Kiev, and a 12th C duke of Bohemia.