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"): Bogusław I (also Bogislaw and Boguslaus;  1130 – 18 March 1187 in Sosnitza near Altwarp) of the House of Griffins was Duke of Pomerania-Stettin from 1156 to 1187.
Relevant evidence: No