Question: 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?
Sentence (from "Bogusław I, Duke of Pomerania"): His father was Wartislaw I.
Relevant evidence: No