Mathilde of Brunswick-Lüneburg Peerage person ID=7822 (d. 1297) Parents Matilda of Brandenburg, Duchess of Brunswick-Lüneburg Otto the Child Children Henry III, Prince of Anhalt-Aschersleben Otto I, Prince of Anhalt-Aschersleben Siblings Albert I, Duke of Brunswick-Lüneburg Conrad of Brunswick-Luneburg Elisabeth of Brunswick-Lüneburg Helene of Brunswick-Lüneburg Bishop Otto I of Brunswick-Lüneburg Agnes of Brunswick-Lüneburg John, Duke of Brunswick-Lüneburg Adelaide of Brunswick-Lüneburg Partners Henry II, Prince of Anhalt-Aschersleben