Biography
Margarete von Braunschweig-Lüneburg was born 12 July 1534 to Ernst I. von Braunschweig-Lüneburg (1497-1546) and Sophie von Mecklenburg-Schwerin (1508-1541) and died 24 September 1596 Marburg, Hesse, Germany of unspecified causes. She married Johann von Mansfeld zu Hinter-Ort (1532-1567) 14 August 1559 JL .
Children
| Name | Birth | Death | Joined with |
| Ernst von Mansfeld zu Hinter-Ort (1561-1609) | 28 July 1561 Rothenburg, Saxony-Anhalt, Germany | 7 April 1609 Hergisdorf, Saxony-Anhalt, Germany | Juliana zu Salm-Kyrburg (1551-1607) |
| Anna Sophie von Mansfeld zu Hinter-Ort (1562-1601) | 13 December 1562 Eisleben | 7 April 1601 Hohensolms | Hermann Adolf zu Solms-Hohensolms (1545-1613) |
| Elisabeth von Mansfeld zu Hinter-Ort (1565-1596) | 1565 | 12 April 1596 Marksuhl, Thuringia, Germany | Johann Ernst von Sachsen-Eisenach (1566-1638) |
| Marie von Mansfeld zu Hinter-Ort (-) | |||