W/2/ Brandenburg, Markgraf Otto III. vonJohann I., Brandenburg, MarkgrafOtto III., Brandenburg, Markgraf2024-01-022024-01-021241-06-1009.06.19801241-06-102997https://urkundenrepositorium.uni-marburg.de/handle/lba/5694imagehttps://creativecommons.org/licenses/by/4.0/Brandenburg, Markgraf Johann I. von; Brandenburg, Markgraf Otto III. von an Lehnin, Kloster - 10.6.124107.08.1981