Biography
Helene Welf von Braunschweig-Lüneburg was born 18 March 1223 to Otto von Braunschweig-Lüneburg (c1204-1252) and Mechthild von Brandenburg (c1210-1261) and died 6 September 1273 of unspecified causes. She married Hermann II. von Thüringen (1223-1241) 1239 JL . She married Albrecht I. von Sachsen (c1180-1261) 1248 JL . William I of England (1027-1087), Henry II of England (1133-1189), Alfred the Great (849-899)/s, Charlemagne (747-814)/s, Hugh Capet (c940-996)/s, Rollo of Normandy (860-932)/s.
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| Offspring of Albrecht I. von Sachsen and Helene von Braunschweig-Lüneburg (1223-1273) | |||
| Name | Birth | Death | Joined with |
| Johann I. von Sachsen-Lauenburg (c1248-1286) | 1248 | 30 July 1286 Wittenberg, Saxony-Anhalt, Germany | Ingeborg of Sweden (c1254-1302) |
| Albrecht II. von Sachsen-Wittenberg (1250-1298) | 1250 Wittenberg, Germany | 25 August 1298 Aken, Germany | Agnes von Habsburg (1257-1322) |
| Helene von Sachsen-Wittenberg (c1253-1309) | 1253 | 12 June 1309 | Heinrich III. von Schlesien-Breslau (c1227-1266) Heinrich III. von Schlesien-Breslau (c1227-1266) Friedrich III. von Nürnberg (c1219-1297) |
| Rudolf von Sachsen (?-1269) | |||
| Elisabeth von Sachsen (?-bef1306) | |||
