Niklot's son Pribislav rose in revolt in 1163, capturing the castles of Malchow and Quetzin.The Christian army was also assisted by a fleet from King Valdemar the Great of Denmark.They were opposed by a force of Slavs led by Pribislav and the Pomeranian dukes Bogislaw I and Casimir I.The outcome of the resulting bloody battle with the Slavs was in doubt, although the Christian lords were eventually victorious.The land of the Obotrites was ravaged by the campaign and many inhabitants, including Pribislav, fled to Pomerania.