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   Tverdislav
   Tverdislav was a posadnik (prime-minister) of the Novgorod Republic in the 1210s. His term in office was marked by incessant civil strife, but its causes are not immediately clear. His father was Mikhalko Stepanich, who was thrice elected to rule as Novgorod`s posadnik. Tverdislav himself was first...
   Found op http://en.wikipedia.org/wiki/Tverdislav
   
   

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