Nielsen Hayden genealogy
Descendants of Matilde von Brandenburg
Abt 1210 - 1261 (~ 51 years)Father: Albrecht II of Brandenburg (Abt 1177 - 25 Feb 1220)
Mother: Mathilde von Nieder-Lausitz ( - 1255)
Matilde von Brandenburg (Abt 1210 - 10 Jun 1261)
Otto I of Brunswick-Lüneburg (1204 - 19 Jun 1252)
   ├─ Adelheid of Brunswick-Lüneburg ( - 12 Jun 1274)
   │ Heinrich I von Hessen (24 Jun 1244 - 21 Dec 1308)(m. Bef 10 Sep 1263)
   │    ├─ Sophia of Hesse ( - Between 12 Aug 1331 and 18 Jun 1340)
   │    │ Otto I of Waldeck ( - 11 Nov 1305)(m. Bef 24 Nov 1276)
   │    │     + Dietrich III of Honstein ( - Between 29 Sep 1329 and 4 May 1330)
   │    ├─ Adelheid of Hesse (Abt 1268 - 7 Dec 1317 bur.Kloster Veßra, Thuringia, Germany)
   │    │ Berthold VI of Henneberg (Between 1271 and 1272 - 3 Apr 1340 Schmalkalden, Thuringia, Germany)(m. 1284)
   │    │    └─ Elizabeth of Henneberg (Bef 7 Dec 1317 - Between 6 Dec 1377 and 30 May 1391 bur.Cloister Church,
   │    │     Birkenfeld, Rhineland-Palatinate, Germany) =>
   │    │     Birkenfeld, Rhineland-Palatinate, Germany) =>
   │    │     + Johann I of Nürnberg ( - 7 Oct 1357 bur.Heilsbronn Cloister, Heilsbronn, Bavaria, Germany)
   │    │     (m. Bef 3 Mar 1333)
   │    │     (m. Bef 3 Mar 1333)
   │    └─ Otto I von Hessen (Abt 1272 - 7 Jan 1328)
   │     Adelheid von Ravensberg ( - Aft 13 Apr 1338)(m. 1297)
   │        └─ Heinrich II von Hessen (Bef 1302 - 3 Jun 1376) =>
   │         + Elisabeth of Meissen (1306 - Bef 10 Nov 1367)(m. Bef 25 Sep 1320)
   ├─ Agnes of Brunswick-Lüneburg ( - 18 Mar 1302)
   │ Wizlaw II of Rügen (1240 - 29 Dec 1302)(m. Between 1263 and 1265)
   │    └─ Helene of Rügen ( - 9 Aug 1315 bur.Wiederstedt Cloister, Saxony-Anhalt, Germany)
   │     Bernhard II of Anhalt ( - Aft 26 Dec 1323)(m. Bef 27 Dec 1302)
   │         + Mathilde of Anhalt ( - Abt 1342)(m. Abt 1339)
   ├─ Helene of Brunswick-Lüneburg (18 Mar 1223 - 6 Sep 1273)
   │ Albrecht I of Saxony (Abt 1180 - 8 Nov 1261)(m. Between 1247 and 1248)
   │    ├─ Albrecht II of Saxony ( - 25 Aug 1298 Aken, Saxony-Anhalt, Germany)
   │    │ Agnes of Habsburg (Abt 1257 - 11 Oct 1322 Wittenberg, Saxony-Anhalt, Germany)
   │    │ (m. Oct 1273 Aachen, Westphalia, Germany)
   │    │ (m. Oct 1273 Aachen, Westphalia, Germany)
   │    │    ├─ Anna of Saxe-Wittenberg ( - 22 Nov 1327 bur.Wismar, Mecklenburg-Vorpommern, Germany) =>
   │    │    │ + Heinrich II of Mecklenburg (Abt 1267 Riga, Latvia -
   │    │    │ 21 Jan 1329 Sternberg, Mecklenburg-Vorpommern, Germany)(m. 6 Jul 1315)
   │    │    │ 21 Jan 1329 Sternberg, Mecklenburg-Vorpommern, Germany)(m. 6 Jul 1315)
   │    │    └─ Rudolf I of Saxony (Abt 1280 - 12 Mar 1356 bur.Wittenberg, Saxony-Anhalt, Germany) =>
   │    │     + Agnes of Lindow-Ruppin ( - 9 May 1343 bur.Franciscan cloister, Wittenberg, Saxony-Anhalt, Germany)
   │    │     (m. Aft 9 Apr 1331)
   │    │     (m. Aft 9 Apr 1331)
   │    └─ Helene of Saxony ( - 12 Jun 1309 bur.Nuremberg, Bavaria)
   │     + Henryk III (Between 1227 and 1230 - 3 Dec 1266)
   │     Friedrich I-III of Nurenberg (Abt 1220 - 14 Aug 1297)(m. Bef 10 Apr 1280)
   │        └─ Friedrich IV of Nurenberg (Aft 15 Aug 1287 - 19 May 1332 Nürnberg, Bavaria, Germany) =>
   │         + Margareta of Görz ( - Between 26 Jun 1348 and 27 Sep 1348 bur.Cloister Church, Birkenfeld,
   │         Rhineland-Palatinate, Germany)(m. Bef 2 Aug 1307)
   │         Rhineland-Palatinate, Germany)(m. Bef 2 Aug 1307)
   └─ Albrecht I (1236 - 15 Aug 1279)
    Alessina de Monferrato ( - 5 Feb 1285)(m. 1 Nov 1266)
       ├─ Heinrich I of Brunswick (Aug 1267 - 7 Sep 1322)
       │ Agnes von Meissen (Bef 1264 - Aft 1 Feb 1332)(m. 1282)
       │     + Adelheid of Everstein ( - Aft 1376)(m. Abt 1335)
       ├─ Albrecht II of Brunswick (Abt 1268 -
       │ 22 Sep 1318 bur.Brunswick Cathedral, Braunschweig, Lower Saxony, Germany)
       │ 22 Sep 1318 bur.Brunswick Cathedral, Braunschweig, Lower Saxony, Germany)
       │ Richza of Werle ( - Aft 2 Oct 1312 bur.Göttingen, Lower Saxony, Germany)(m. 10 Jan 1284)
       │    ├─ Magnus I of Brunswick (Abt 1304 -
       │    │ Between 15 Jun 1369 and 15 Aug 1369 bur.St. Michaelis, Lüneberg, Lower Saxony, Germany) =>
       │    │ Between 15 Jun 1369 and 15 Aug 1369 bur.St. Michaelis, Lüneberg, Lower Saxony, Germany) =>
       │    │ + Sophia of Brandenburg (Abt 1300 - 1356)(m. Abt 1327)
       │     + Elizabeth von Hessen ( - 7 Mar 1390)(m. 1339)
       └─ Matilde (1276 - Bef 31 Aug 1318)
        Henryk I-III von Schliesen (Between 1251 and 1260 - 9 Dec 1309)(m. Bef Apr 1290)
           └─ Heinrich II of Silesia (Between 1289 and 1293 - 22 Jan 1342 bur.Zagan, Zagan, Silesia, Poland) =>
            + Mechtilde of Brandenburg (Between 1298 and 1300 - Between Jul 1325 and 31 Mar 1329)
            (m. Between 5 Jan 1310 and 29 Feb 1312)
            (m. Between 5 Jan 1310 and 29 Feb 1312)