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Male Johann I Oldenburg Click to view Johann I Oldenburg in the family tree

Johann I was born about 1206 in Oldenburg, Germany.  Johann I's father was Christian II Oldenburg and his mother was Agnes Altena.  His paternal grandparents were Moritz Oldenburg and Salome Wickrath; his maternal grandparents were Arnold Altena and Matilda Holland.  He was an only child.  He died in 1270 in Oldenburg, Germany.


Johann I's family with Richza Hoya

They had a son named Christian III.

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