In fact , Margaret had died already in 1266 .
Grillparzer perpetuated the legend of Ottokar 's wife Margaret of Babenberg unsuccessfully trying to reconcile the opponents on the eve of the battle .
Margaret of Babenberg had died already in 1266 .
Grillparzer perpetuated the legend of Ottokar 's wife Margaret of Babenberg unsuccessfully trying to reconcile the opponents on the eve of the battle .