Barnim I, Duke of Pomerania

Barnim I the Good (c. 1217–1278), of the Griffin dynasty, ruled as duke of Pomerania from his father Bogislaw II's death in 1220, sharing power with his cousin Wartislaw III at Demmin. After German princes defeated Denmark at Bornhöved in 1227, Emperor Frederick II placed Pomerania under Brandenburg's suzerainty, and by the 1250 Treaty of Landin Barnim surrendered the Uckermark and accepted Ascanian overlordship.

In 1264 he inherited Wartislaw's lands and united the duchy. He promoted German settlement and granted rights to Stettin in 1243 and many other towns. He died on 13 November 1278.