Gilbert Foliot II. It opened on 4 April 1139, and among other matters heard an appeal from the Empress Matilda concerning her claim to the throne of England. Matilda was the daughter and only surviving legitimate child of King Henry I, but following her father's death in late 1135 her cousin Stephen, the son of Henry's sister, had seized the crown. By 1139 Matilda had gathered supporters and was contesting Stephen's right to the throne. In about 1143 Foliot wrote an account of the proceedings of the council in a letter to one of Matilda's supporters. No action was taken on her
Henry Borwin I, Lord of Mecklenburg Lion in Lüneburg, and Henry Borwin I succeeded him as Lord of Mecklenburg. Shortly before Pribislav's death, Henry Borwin I married Matilda, a daughter of Henry the Lion. For several years, Henry Borwin I fought a war with his cousin Nicholas I. His father-in-law was unable to assist him during this war. This lack of outside assistance attracted the attention of King Canute VI of Denmark, who used the situation to expand his position on the Baltic Sea coast. The Danes took Henry Borwin I prisoner. He had to cede Rostock to Denmark and accept Canute VI as his liege