Wenceslas I

(born 1205—died Sept. 23, 1253) King of Bohemia (1230–53). He prevented Mongol armies from attacking Bohemia in 1241 but could not defend Moravia. He gained control of Austria and forced the Austrian estates to accept his son Premysl Otakar II as their duke in 1251. Bohemia prospered under his reign, and an influx of German colonists and craftsmen enriched the country.

Source: Encyclopedia Britannica