Nielsen Hayden genealogy
Descendants of Guillermo VIII-VI
- 1225Father: Boniface I (Abt 1150 - Sep 1207)
Mother: Elena di Busca
Guillermo VIII-VI ( - 17 Sep 1225 Halmyros, Greece)
Berta de Clavesena (m. Bef 9 Aug 1202)
   └─ Boniface II (Abt 1202 - Between 12 Jun 1253 and 10 Dec 1256)
    Margereta of Savoy ( - 1254)(m. 9 Dec 1235)
       └─ Alessina de Monferrato ( - 5 Feb 1285)
        Albrecht I (1236 - 15 Aug 1279)(m. 1 Nov 1266)
           ├─ Heinrich I of Brunswick (Aug 1267 - 7 Sep 1322)
           │ Agnes von Meissen (Bef 1264 - Aft 1 Feb 1332)(m. 1282)
           │    └─ Ernst of Brunswick (Abt 1297 - 11 Mar 1361)
           │     Adelheid of Everstein ( - Aft 1376)(m. Abt 1335)
           │        └─ Albrecht I of Brunswick (Abt 1339 -
           │         Between 11 Aug 1383 and 22 Sep 1383 Salzderhelden, Lower Saxony, Germany)
           │         Between 11 Aug 1383 and 22 Sep 1383 Salzderhelden, Lower Saxony, Germany)
           │         Agnes of Brunswick-Lüneburg ( - 21 Mar 1410)(m. Bef 17 Aug 1372)
           │            └─ Erich of Brunswick ( - 28 May 1427 bur.St. Alexander, Einbeck, Lower Saxony,
           │             germany)
           │             germany)
           │             Elizabeth of Brunswick-Göttingen ( - Aft 29 Sep 1444)
           │             (m. Between 1 Jul 1405 and 14 Jul 1405)
           │             (m. Between 1 Jul 1405 and 14 Jul 1405)
           │                └─ Anna of Brunswick-Grubenhagen (Abt 1420 -
           │                 9 Oct 1474 Nannhofen, Bavaria, Germany)
           │                 9 Oct 1474 Nannhofen, Bavaria, Germany)
           │                 + Albrecht III of Bavaria (Munich, Bavaria, Germany;27 Mar 1401 - 29 Feb 1460)
           │                 (m. 22 Jan 1437 Munich, Bavaria, Germany)
           │                 (m. 22 Jan 1437 Munich, Bavaria, Germany)
           ├─ 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)
           │    │    ├─ Sophie of Brunswick ( - 1394)
           │    │    │ Dietrich IV of Honstein ( - Between 1378 and 1379)(m. Aft 1350)
           │    │    │    └─ Agnes of Honstein (Abt 1360 - 1 Sep 1407)
           │    │    │     Christian V of Oldenburg ( - Between 10 Nov 1399 and 22 Apr 1403)
           │    │    │     (m. Bef 29 Aug 1377)
           │    │    │     (m. Bef 29 Aug 1377)
           │    │    │        └─ Dietrich of Oldenburg ( - 14 Feb 1440 Delmenhorst, Lower Saxony, Germany) =>
           │    │    │         + Heilwig of Holstein (1398 - Bef 11 Nov 1436 bur.Oldenburg, Lower Saxony,
           │    │    │         Germany)(m. 23 Nov 1423)
           │    │    │         Germany)(m. 23 Nov 1423)
           │    │    └─ Magnus II of Brunswick (Abt 1328 - 25 Jul 1373 Leveste, Lower Saxony, Germany)
           │    │     Katharina of Anhalt ( - 30 Jan 1390)(m. Bef 6 Oct 1356)
           │    │        ├─ Agnes of Brunswick-Lüneburg ( - 21 Mar 1410)
           │    │        │ Albrecht I of Brunswick (Abt 1339 - Between 11 Aug 1383 and 22 Sep 1383
           │    │        │ Salzderhelden, Lower Saxony, Germany)(m. Bef 17 Aug 1372)
           │    │        │ Salzderhelden, Lower Saxony, Germany)(m. Bef 17 Aug 1372)
           │    │        │    └─ This couple were related to each other. Any descendants have been already
           │    │        │     been listed
           │    │        │     been listed
           │    │        └─ Elisabeth of Brunswick-Lüneburg (Abt 1370 - Bef 3 Apr 1422)
           │    │         Gerhard V of Holstein (Abt 1367 - 5 Aug 1404 Suderhamme, Dithmarschen)(m. 1395)
           │    │            └─ Heilwig of Holstein (1398 - Bef 11 Nov 1436 bur.Oldenburg, Lower Saxony,
           │    │             Germany) =>
           │    │             Germany) =>
           │    │             + Dietrich of Oldenburg ( - 14 Feb 1440 Delmenhorst, Lower Saxony, Germany)
           │    │             (m. 23 Nov 1423)
           │    │             (m. 23 Nov 1423)
           │    └─ Ernst of Brunswick (1305 - 24 Apr 1367)
           │     Elizabeth von Hessen ( - 7 Mar 1390)(m. 1339)
           │        └─ Otto of Brunswick (Abt 1340 - 13 Dec 1394 Hardegsen, Lower Saxony, Germany)
           │         Margareta of Jülich (Abt 1364 - 18 Jun 1442 Hardegsen, Lower Saxony, Germany)
           │         (m. Bef 24 Jun 1379)
           │         (m. Bef 24 Jun 1379)
           │            └─ Elizabeth of Brunswick-Göttingen ( - Aft 29 Sep 1444)
           │             Erich of Brunswick ( - 28 May 1427 bur.St. Alexander, Einbeck, Lower Saxony,
           │             germany)(m. Between 1 Jul 1405 and 14 Jul 1405)
           │             germany)(m. Between 1 Jul 1405 and 14 Jul 1405)
           │                └─ This couple were related to each other. Any descendants have been already
           │                 been listed
           │                 been listed
           └─ 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)
                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)
                   ├─ Heinrich III of Silesia (Between 1312 and 1321 -
                   │ 13 Apr 1369 bur.Augustinian Cloister, Zagan, Zagan, Silesia, Poland)
                   │ 13 Apr 1369 bur.Augustinian Cloister, Zagan, Zagan, Silesia, Poland)
                   │ Anna of Masovia (Bef 1324 - 16 Feb 1363)(m. Bef 6 Sep 1337)
                   │    └─ Jadwiga of Silesia (Bef 1350 - 27 Mar 1390 bur.Legnica, Lower Silesia, Poland)
                   │     Ruprecht of Silesia (Between 1340 and 1347 -
                   │     Bef 12 Jan 1409 bur.Legnica, Lower Silesia, Poland)(m. Bef 10 Feb 1372)
                   │     Bef 12 Jan 1409 bur.Legnica, Lower Silesia, Poland)(m. Bef 10 Feb 1372)
                   │        └─ Barbara of Silesia-Liegnitz ( - 16 May 1435) =>
                   │         + Rudolf III of Saxony (Abt 1373 -
                   │         9 Jun 1419 bur.Wittenberg, Saxony-Anhalt, Germany)(m. 6 Mar 1396)
                   │         9 Jun 1419 bur.Wittenberg, Saxony-Anhalt, Germany)(m. 6 Mar 1396)
                   └─ Agnes von Schlesien (Between 1312 and 1321 - 7 Jul 1362)
                    Ludwig I von Schliesen-Liegnitz (Abt 1311 - Between 6 Dec 1398 and 23 Dec 1398)
                    (m. Bef 1345)
                    (m. Bef 1345)
                       └─ Margareta von Schliesen-Brieg (Aft 1346 - 26 Feb 1386 The Hague, Netherlands)
                        Albrecht I (25 Jul 1336 Munich, Bavaria, Germany -
                        12 Dec 1404 The Hague, Netherlands)(m. 28 Jul 1353 Prague, Bohemia)
                        12 Dec 1404 The Hague, Netherlands)(m. 28 Jul 1353 Prague, Bohemia)
                           └─ Margareta of Bavaria (1363 - 24 Jan 1424 Dijon, Côte-d'Or, Burgundy,
                            France) =>
                            France) =>
                            + Jean of Burgundy (28 May 1371 Dijon, Côte-d'Or, Burgundy, France - 10 Sep
                            1419 bur.Dijon, Côte-d'Or, Burgundy, France)(m. 12 Apr 1385 Cambrai,
                            Hauts-de-France, France)
                            1419 bur.Dijon, Côte-d'Or, Burgundy, France)(m. 12 Apr 1385 Cambrai,
                            Hauts-de-France, France)