Johann I Oldenburg & Richza Hoya 
They had a son named Christian III.
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Personal Details
Johann I Oldenburg
Johann I was born about 1206 in Oldenburg, Germany. He died in 1270 in Oldenburg, Germany.
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Children
Christian III Oldenburg
Christian III was born about 1228 in Oldenburg, Germany. He died in 1285 in Oldenburg, Germany.
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