After the extinction of the male lines of the perceived Fairhair dynasty in 1319, the throne of Norway passed through matrilineal descent to Magnus VII, who in the same year became elected as king of Sweden too. In 1343 Magnus had to abdicate as King of Norway in favour of his younger son, Haakon VI of Norway. The oldest son, Eric, was explicitly removed from the future line of succession of Norway. Traditionally Norwegian historians have interpreted this clear break with previous successions as stemming from dissatisfaction among the Norwegian nobility with Norway's junior position in the union. However it may also be the result of Magnus' dynastic policies. He had two sons and two kingdoms and might have wished they should inherit one each, rather than start battling over the inheritance. Magnus was at the same time attempting to secure Eric's future election as King of Sweden.