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Male Johann I Duke von BRAUNSCHWEIG-LUNEBURG Click to view Johann I Duke von BRAUNSCHWEIG-LUNEBURG in the family tree

Johann I Duke's father was OTTO I HERZOG von BRAUNSCHWEIG-LUNEBURG and his mother was MATHILDA von BRANDENBURG.  His paternal grandparents were WILHELM HERZOG von BRAUNSCHWEIG-LUNEBURG and HELENA VALDEMARSDOTTIR de DENMARK; his maternal grandparents were ALBRECHT II MARGRAVE von BRANDENBURG and MATHILDA von NIEDER-LAUSNITZ. He had three brothers and six sisters, named ALBRECHT I HERZOG, Konrad, Otto, AGNES, Adelheid, Elizabeth, Helen, Margarethe and Matilde.

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