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 "Valdemar I of Denmark"): Valdemar I of Denmark (14 January 1131 – 12 May 1182), also known as Valdemar the Great (Danish: "Valdemar den Store" ), was King of Denmark from 1146 until his death in 1182.
Relevant evidence: Yes