"Otto I (c. 1128 – July 8, 1184) was the second Margrave of Brandenburg, from 1170 until his death." - (en.wikipedia.org 31.01.2020)
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| brother of | Bernhard, Count of Anhalt [brother of], Siegfried, Prince-Archbishop of Bremen [brother of] ↓ |
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| father of | Albert II, Margrave of Brandenburg ↓ |
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