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Johann IV. zu Mecklenburg, Duke of Mecklenburg, was born before 1370 to Magnus I. zu Mecklenburg (aft1338-1384) and Elisabeth von Pommern-Wolgast (c1347-c1394) and died 16 October 1422 Schwerin of unspecified causes. He married Jutta von Hoya (?-1415) . He married Katharina von Sachsen-Lauenburg (c1400-1450) 1416 JL .
Children
Name | Birth | Death | Joined with |
Heinrich IV. zu Mecklenburg (1417-1477) | 1417 | 9 March 1477 | Dorothea von Brandenburg (1420-1491) |
Johann V. zu Mecklenburg (1418-1442) |