Duke Wartislaw I of Pomerania had continued…
1181 CE
Duke Wartislaw I of Pomerania had continued to struggle against Polish overlordship.
In 1181, Wartislaw's son Duke Bogislaw I of Pomerania becomes a vassal of Emperor Frederick.
1181 CE
Duke Wartislaw I of Pomerania had continued to struggle against Polish overlordship.
In 1181, Wartislaw's son Duke Bogislaw I of Pomerania becomes a vassal of Emperor Frederick.