Otto the Child German duke of Brunswick-Lüneburg (1204–1252) Parents Helena of Denmark William of Luneburg Children John, Duke of Brunswick-Lüneburg Elisabeth of Brunswick-Lüneburg Helene of Brunswick-Lüneburg Agnes of Brunswick-Lüneburg Albert I, Duke of Brunswick-Lüneburg Conrad of Brunswick-Luneburg Adelaide of Brunswick-Lüneburg Mathilde of Brunswick-Lüneburg Otto I of Brunswick-Lüneburg Partners Matilda of Brandenburg, Duchess of Brunswick-Lüneburg
