Margaret (d. March 14, 1277), Abbess of Valduc Abbey (Hertogendal). His second marriage was to Sophie of Thuringia (March 20, 1224 – May 29, 1275), daughter of Ludwig IV of Thuringia and Saint Elisabeth of Hungary by whom he had two children: Henry (1244–1308), created Landgrave of Hesse in 1264.
Margaret of Brunswick-Lüneburg (6 April 1573 – 7 August 1643); married John Casimir, Duke of Saxe-Coburg. Frederick IV, Duke of Brunswick-Lüneburg (28 August 1574 – 10 December 1648); Prince of Lüneburg from 1636–1648. Marie of Brunswick-Lüneburg (21 October 1575 – 8 August 1610)
02/05/2022 · Sophie is the French form of the Greek Sophia, for which it is also commonly used as a nickname. Sophies are scattered throughout European royal history, including Sophie of Thuringia, Duchess of Brabant, Princess Sophie of Sweden, and in modern times, Sophie, Duchess of Wessex, the wife of Britain's Prince Edward.