Nielsen Hayden genealogy
Descendants of Alessina de Monferrato
- 1285Father: Boniface II (Abt 1202 - Between 12 Jun 1253 and 10 Dec 1256)
Mother: Margereta of Savoy ( - 1254)
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)
   ├─ 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)
   │    │    │ + Dietrich IV of Honstein ( - Between 1378 and 1379)(m. Aft 1350)
   │    │    └─ Magnus II of Brunswick (Abt 1328 - 25 Jul 1373 Leveste, Lower Saxony, Germany) =>
   │    │     + Katharina of Anhalt ( - 30 Jan 1390)(m. Bef 6 Oct 1356)
   │    └─ 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)
   └─ 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)
           ├─ 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)
           └─ 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)