Wenceslas I, b. 1205, d. Sept. 22, 1253, king of Bohemia (1230-53), succeeded
his father, Ottokar I, founder of the Bohemian kingdom. He added Austria to
the possessions of the Premysl dynasty by compelling the Austrians to
recognize his son Ottokar II as duke. The influx of German colonists into
Bohemia continued under Wenceslas and brought prosperity, although Moravia was
attacked by the Mongols in the 1240s and the Bohemian nobles rebelled from
1248 to 1250. Ottokar II succeeded Wenceslas.