Matilda of Brunswick-Grubenhagen
Matilda of Brunswick-Grubenhagen (born c. 1295, died 1344) was a daughter of Duke Henry I of Brunswick-Grubenhagen and Agnes of Meissen. In 1311 she married John II, Lord of Werle-Güstrow, and bore Nicholas III, Bernard II and Sophia, wife of Duke Barnim IV of Pomerania-Wolgast.