Wanna belongs to the Land of Hadeln, first an exclave of the younger Duchy of Saxony and after its de facto dynastic partition in 1296 of the Duchy of Saxe-Lauenburg, established de jure in 1260.
Wanna is situated within the Land of Hadeln, which was initially a part of the younger Duchy of Saxony before being divided into two parts in 1296, with one portion becoming de facto independent and the other remaining under the control of the Duchy of Saxe-Lauenburg. This division was formally recognized in 1260.