Bogusław I, of the House of Griffins was Duke of Pomerania-Stettin from 1156 to 1187, he was first married to Walburgis (d. 1177), daughter of which King of Denmark from 1146 until his death in 1182?
Bogusław I, Duke of Pomerania:  He was first married to Walburgis (d. 1177), daughter of Valdemar I of Denmark and later to Anastasia, daughter of Mieszko III of Poland and Eudoxia of Kiev.
i don't know