Philip II, Duke of Brunswick Grubenhagen
Philip II , Duke of BrunswickLneburg, a member of the House of Welf, was the last ruler of the Principality of Grubenhagen from 1595 until his death. When he died in 1596, the Grubenhagen branch of the Welfs became extinct, whereafter the principality was occupied by Duke Henry Julius of BrunswickWolfenbttel.
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Source: Wikipedia