Elisabeth of Brunswick-Luneburg

Otto I, Duke of Brunswick-Lüneburg

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Children

Otto married Matilda, daughter of Albert II, Margrave of Brandenburg, around 1228. They had the following known children:

Elizabeth (died 1266), married William II of Holland

Helen (died 1273), married Albert II, 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-Ascherleben

Agnes, married Wizlaw II, Duke of Rügen

Albert (died 1279)

John (died 1277)

Otto, Bishop of Hildesheim (died 1279)

Conrad, Bishop of Verden (died 1300)