Duke Barnim IV was a notable ruler of the Duchy of Pomerania during the 15th century. He was born in 1451 and became Duke in 1474, leading the region through a period of political and economic challenges. His reign was marked by efforts to strengthen the duchy's influence and maintain stability. Barnim IV was part of the Griffin dynasty, which played a significant role in the history of Pomerania. He worked to improve relations with neighboring territories and was involved in various alliances. His leadership contributed to the cultural and political development of the region during his time.