Wenceslaus

[wen-sis-laws] /ˈwɛn sɪsˌlɔs/
noun
1.
1361–1419, emperor of the Holy Roman Empire 1378–1400; as Wenceslaus IV, king of Bohemia 1378–1419.
2.
Saint ("Good King Wenceslaus") a.d. 903?–c935, duke of Bohemia 928–935.
Also, Wenceslas.
German Wenzel.
British Dictionary definitions for wenceslas

Wenceslaus

/ˈwɛnsɪsləs/
noun
1.
1361–1419, Holy Roman Emperor (1378–1400) and, as Wenceslaus IV, king of Bohemia (1378–1419)
2.
Saint, known as Good King Wenceslaus. ?907–929, duke of Bohemia (?925–29); patron saint of Bohemia. Feast day: Sept 28
Word Origin and History for wenceslas

Wenceslas

masc. proper name, from Medieval Latin Venceslaus (modern Czech Vaclav), from Old Czech Veceslavu, literally "having greater glory," from Slavic *vetye- "greater" + *-slavu "fame, glory," from PIE *klou-, from root *kle- "to hear" (see listen).