Tags: Noble.
Bogislaw IV (died 19 February 1309 or 24 February 1309) of the Griffins dynasty was Duke of Pomerania for thirty years.Bogislaw was the eldest son of Duke Barnim I by his first wife sometimes said to be a daughter of King Eric X of Sweden. He was an adult at his father’s death in 1278 having been co-ruler since 1276.