The Ascanian Dynasty continued in Saxe-Lauenburg until 1689 , but after the Lauenburgish line had finally lost the Saxon Electorate to the Wittenberg line in 1356 and failed to obtain the succession in the Electorate after 1422 , recognition of the Dukes of Saxe-Lauenburg as Dukes of Saxony waned .
The Ascanian Dynasty continued in Saxe-Lauenburg until 1689 , but after the Lauenburg line had finally lost the Saxon Electorate to the Wittenberg line in 1356 and failed to obtain the succession in the Electorate after 1422 , recognition of the Dukes of Saxe-Lauenburg as Dukes of Saxony waned .