Matilda of Brandenburg, Duchess of Brunswick-Lüneburg

Matilda of Brandenburg (c. 1210 – 10 June 1261) was a daughter of Albert II, Margrave of Brandenburg, and Matilda of Lusatia. In 1228 she married Duke Otto I of Lüneburg, a son of William of Winchester. She died on 10 June 1261 in Lüneburg. Mathilde and Otto had the following known children:

• Elizabeth (died 1266), married William II of Holland
• Helen (died 1273), married Albert I, Duke of Saxony and Hermann II, Landgrave of Thuringia
• Adelaide (died 1274), married Henry I, Landgrave of Hesse
• Matilda (died around 1295), married Henry II, Prince of Anhalt-Aschersleben
• Agnes, married Wizlaw II, Duke of Rügen
• Albert (died 1279)
• John (died 1277)
• Otto, Bishop of Hildesheim (died 1279)
• Conrad, Prince-Bishop of Verden (died 1300)