John IV, Duke of Mecklenburg
Duke (1384-1395) of Mecklenburg · Germany · On the map · Lived 1370 to 1422 · aged 52
John IV, Duke of Mecklenburg was sole ruler of the Duchy of Mecklenburg from 1384 to 1395 and co-regent from 1395 to 1422.
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Germany
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Lived 1370 to 1422 · aged 52