Johann I., Brandenburg, MarkgrafOtto III., Brandenburg, Markgraf2024-01-022024-01-021244-01-2628.04.19801244-01-263107https://urkundenrepositorium.uni-marburg.de/handle/lba/5816imagehttps://creativecommons.org/licenses/by/4.0/Brandenburg, Markgraf Otto III. von; Brandenburg, Markgraf Johann I. von an Brandenburg,- Geistliche - 26.1.124410.06.1983