Father: Duke Otto I of Braunschweig-Luneburg Born: 1204 Married: Unknown Died: June 19, 1256
Mother: Princess Mathilde of Brandenburg Born: 1210 Died: June 10, 1261
Children: 1. Princess Helene of Braunschweig-Luneburg (b.1225) 2. Princess Mathilde of Braunschweig-Luneburg (b.1227) 3. Bishop Otto of Hildesheim (b.1231) 4. Bishop Konrad of Verden (b.1234) 5. Duke Albrecht I of Braunschweig-Luneburg (b.1236) 6. Duke Johann of Braunschweig-Luneburg (b.1239) 7. Princess Elisabeth of Braunschweig-Luneburg (b.1241) 8. Princess Adelheid of Braunschweig (b.1246) 9. Princess Agnes of Braunschweig (b.1246)