Casimir V, Duke of Pomerania

His father made him leader of the Pomeranian contingent who took part in the Battle of Tannenberg (1410) on the side of the Teutonic Order.

After Duke Swantibors's death in 1413, Casimir and his older brother Otto II jointly ruled Pomerania-Stettin.

In 1415, Elector Frederick I of Brandenburg convinced King Sigismund to outlaw Otto II and Casimir V. He also called the imperial immediacy of Pomerania in question.

He ordered the execution of the ringleaders, the city had to pay a steep fine and resign from the Hanseatic League.

From this marriage, he had three children: After Catherine's death he married Elisabeth, a daughter of Duke Eric I of Brunswick-Grubenhagen.