Our Family's Journey Through Time
![Heinrich Xii 'De Leeuw' [Welf] Von Sachsen](img/male.jpg)
1129 - 1195 (66 years)
 | Princess Mathilde Of Beieren 1170-Yes, date unknown |
| Princess Mathilde Of Beieren | |
| B: | 1170 |
| D: | Yes, date unknown |
| Mathilde van van Braunschweig 1172-1209 |
| Mathilde van van Braunschweig | |
| B: | 1172 |
| D: | 13 Jan 1209 |
| Heinrich V 'De Lange' Von Braunschweig 1173-1227 |
| Heinrich V 'De Lange' Von Braunschweig | |
| B: | 1173 |
| D: | 28 Apr 1227 |
| Braunschweig (Brunswick), Niedersachsen, German | |
| Duke Lothar Of Beieren 1174-Yes, date unknown |
| Duke Lothar Of Beieren | |
| B: | 1174 |
| D: | Yes, date unknown |
| Otto Iv [Welf] Von Braunschweig 1177-1218 |
| Otto Iv [Welf] Von Braunschweig | |
| B: | 1177 |
| D: | 19 May 1218 |
| Harzburg Castle, Saxony, Germany | |
| Princess Richza Of Beieren 1180-1224 |
| Princess Richza Of Beieren | |
| B: | 1180 |
| D: | 1224 |
| Helene Ilona Welf 1223-1273 |
| Helene Ilona Welf | |
| B: | 18 Mar 1223 |
| Braunschweig, Braunschweig-Lüneburg, Deutschland(HRR) | |
| D: | 6 Sep 1273 |
| Ambergau, Sachsen, Germany | |
| Elisabeth vonBayern 1227-1273 |
| Elisabeth vonBayern | |
| B: | 1227 |
| Kelheim, Kelheim, Bayern, Germany | |
| D: | 9 Oct 1273 |
| Greifenburg, Tirol, Austria | |
| Matilde von Braunschweig-Lüneburg Abt 1229-1299 |
| Matilde von Braunschweig-Lüneburg | |
| B: | Abt 1229 |
| Braunschweig, Germany | |
| D: | 1299 |
| Aschersleben, Sachsen, Germany | |
| Otto prins af von Braunschweig-Lüneburg Abt 1232-1279 |
| Otto prins af von Braunschweig-Lüneburg | |
| B: | Abt 1232 |
| Braunschweig, Braunschweig, Niedersachsen, Germany | |
| D: | 4 Jul 1279 |
| Braunschweig, Braunschweig, Niedersachsen, Germany | |
| Margarethe Brunswick Luneburg 1233-Bef 1261 |
| Margarethe Brunswick Luneburg | |
| B: | 1233 |
| Braunschweig, Braunschweig, Niedersachsen, Germany | |
| D: | Bef 25 May 1261 |
| Konrad I von Braunschweig Welfen (geb. Braunschweig-Lüneburg) | |
| B: | 1234 |
| Of Braunschweig, Braunschweig, Germany | |
| D: | 15 Sep 1300 |
| Elisabeth Braunschweig-Lüneburg Abt 1234-1266 |
| Elisabeth Braunschweig-Lüneburg | |
| B: | Abt 1234 |
| Braunschweig, Tyskland | |
| D: | 27 May 1266 |
| Albrecht I. der Große von Braunschweig-Lüneburg (geb. Braunschweig), Herzog | |
| B: | 15 Aug 1236 |
| Braunschweig, Braunschweig-Lüneburg, Deutschland(HRR) | |
| D: | 15 Aug 1279 |
| Braunschweig, Braunschweig, Deutschland(HRR) | |
| Johann I von Braunschweig-Lüneburg (geb. Von Brunswick-Lüneburg), Herzog | |
| B: | 1242 |
| Braunschweig, Tyskland | |
| D: | 13 Dec 1277 |
| Braunschweig, Germany | |
| Agnes Fürstin von Rügen Braunschweig-Lüneburg Welf | |
| B: | 1246 |
| D: | Dec 1327 |
| Adelheid von Braunschweig-Lüneburg Abt 1251-1274 |
| Adelheid von Braunschweig-Lüneburg | |
| B: | Abt 1251 |
| Luneburg,Hannover,,Prussia | |
| D: | 12 Jun 1274 |
| St Elisabethkir,Marburg,Hessen Nassau,Prussia | |
| Otto I. das Kind von Braunschweig-Lüneburg, Herzog | |
| B: | Apr 1204 |
| Braunschweig, Braunschweig, Deutschland(HRR) | |
| D: | 9 Jun 1252 |
| Lüneburg, Niedersachsen, Deutschland | |
| Mathilde von Brandenburg Abt 1209-1261 |
| Mathilde von Brandenburg | |
| B: | Abt 1209 |
| Brandenburg, Deutschland(HRR) | |
| M: | 1228 |
| D: | 10 Jun 1261 |
| Lüneburg, Braunschweig, Deutschland(HRR) | |
| Marianna Welf -Yes, date unknown |
| Marianna Welf | |
| D: | Yes, date unknown |
| Wilhelm William Herzog von Lüneburg, William Longsword of Winchester, The Elder von Braunschweig-Lüneburg (Welf Winchester Herzog von Braunschweig-Lüneburg) | |
| B: | 11 Apr 1184 |
| Winchester, Hampshire, England | |
| D: | 12 Dec 1213 |
| Luneburg, Brunswick, Thueringen, Germany | |
| Helene Estridsen Princess of Denmark Valdemarsdottir Abt 1176-1233 |
| Helene Estridsen Princess of Denmark Valdemarsdottir | |
| B: | Abt 1176 |
| Roskilde, Denmark | |
| D: | 22 Nov 1233 |
| Braunschweig, Germany | |
| Heinrich Xii 'De Leeuw' [Welf] Von Sachsen | |
| B: | 1129 |
| Ravensburg, Donau, Wurttemberg | |
| D: | 6 Aug 1195 |
| Braunschweig (Brunswick), Niedersachsen, German | |
| Matilda Maud Plantagenêt 1156-1189 |
| Matilda Maud Plantagenêt | |
| B: | 6 Jan 1156 |
| London, Middlesex, England, Great Britain | |
| D: | 28 Jun 1189 |
| Braunschweig (Brunswick), Niedersachsen, German | |
We strive to document all of our sources in this family tree. If you have something to add, please let us know.
