Biography
Johann I. von Lüneburg, Herzog zu Braunschweig und Lüneburg, Fürst im Fürstentum Lüneburg, was born 1242 to Otto von Braunschweig-Lüneburg (c1204-1252) and Mechthild von Brandenburg (c1210-1261) and died 13 December 1277 of unspecified causes. He married Liutgard von Holstein (c1251-1289) 1265 JL in Hamburg, Germany.
Children
| Name | Birth | Death | Joined with |
| Otto II. von Braunschweig-Lüneburg (c1266-1330) | 1266 | 10 April 1330 | Mechthild von Wittelsbach (1275-1319) |
| Matilde von Lüneburg (-aft1301) | |||
| Elisabeth von Lüneburg (-bef1299) | 1299 | Johann II. von Oldenburg (c1270-1316) | |
| Helene von Lüneburg (-) | |||
| Agnes von Lüneburg (-) | |||
Footnotes (including sources)
| ‡ General |