W/2/ Brandenburg, Markgraf Otto III. vonJohann I., Brandenburg, MarkgrafOtto III., Brandenburg, Markgraf2024-01-022024-01-021252-07-0209.06.19801252-07-023004https://urkundenrepositorium.uni-marburg.de/handle/lba/5701imagehttps://creativecommons.org/licenses/by/4.0/Brandenburg, Markgraf Johann I. von; Brandenburg, Markgraf Otto III. von an Lehnin, Kloster - 2.7.125207.08.1981