Frederick, Duke of Bohemia Duke of Bohemia (c. 1142 – 1189) (1142–1189) Parents Gertrude of Bohemia Vladislaus II of Bohemia Children Wratislaw of Bohemia Ludmilla of Bohemia Sophie von Böhmen Siblings Agnes of Bohemia Ottokar I of Bohemia Svatopluk Vladislavovich Adalbert III of Bohemia Vladislaus III, Duke of Bohemia Richza von Boehmen Angela Bohemica Partners Elizabeth of Hungary, Duchess of Bohemia
