sentences:  According to the chronicler Lambert of Hersfeld, Adalbert supported Margrave Dedi I in his 1069 conflict with King Henry IV.Dedi, a member of the House of Wettin, had married Adalbert's mother-in-law Adela of Louvain, widow since 1067, and claimed the Thuringian possessions of her deceased husband Margrave Otto of Meissen.Their revolt found little support; both had to surrender in short order and were pardoned in 1070, Adalbert however remained a fierce opponent of the king.