In 886, the Treaty of Alfred and Guthrum defined the boundaries of their two kingdoms. The kingdom of Mercia was divided up, with part going to Alfred's Wessex and the other part to Guthrum's East Anglia. The agreement also defined the social classes of Danish East Anglia and their equivalents in Wessex. It tried to provide a framework that would minimise conflict and regulate commerce between the two peoples. It is not clear how seriously Guthrum took his conversion to Christianity, but he was the first of the Danish rulers of the English kingdoms to mint coins on the Alfredian model, under his baptismal name of Athelstan. By the end of the 9th century, all of the Anglo-Danish rulers were minting coins too. By the 10th century, the Anglo-Saxon model of kingship seems to have been universally adopted by the Anglo-Danish leadership.