Nielsen Hayden genealogy
Descendants of Bengt Folkason
Abt 1105 -Father: Folke (Abt 1075 - ??)
Mother: Ingegerd of Denmark (Between 1081 and 1085 - ??)
Bengt Folkason (Abt 1105 - ??)
   └─ Magnus Minnesköld (Abt 1160 - 31 Jan 1208 near Kungslena, Västergötland, Sweden)
    Ingrid Ylva (Between 1175 and 1180 - 1251)
       └─ Birger Magnusson (Abt 1200 - 21 Oct 1266)
        Ingeborg Eriksdotter (Abt 1212 - 1254)(m. Abt 1235)
           ├─ Richeza Birgersdotter ( - Bef 13 Dec 1288)
           │ Heinrich I of Werle (Abt 1235 - 8 Oct 1291)(m. 1262)
           │    └─ Richza of Werle ( - Aft 2 Oct 1312 bur.Göttingen, Lower Saxony, Germany)
           │     Albrecht II of Brunswick (Abt 1268 - 22 Sep 1318 bur.Brunswick Cathedral, Braunschweig, Lower
           │     Saxony, Germany)(m. 10 Jan 1284)
           │     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)
           │        │ 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)
           │        │    └─ 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)
           │        │        └─ Elisabeth of Brunswick-Lüneburg (Abt 1370 - Bef 3 Apr 1422) =>
           │        │         + Gerhard V of Holstein (Abt 1367 - 5 Aug 1404 Suderhamme, Dithmarschen)
           │        │         (m. 1395)
           │        │         (m. 1395)
           │        └─ 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)
           ├─ Valdemar Birgersson, King of Sweden (1237 - 26 Dec 1302)
           │ Sofia of Denmark, Queen Consort of Sweden (Abt 1241 - 1286)(m. 1260)
           │    └─ Ingeborg of Sweden ( - Bef 1293)
           │     Gerhard II of Holstein (Bef 1 Nov 1253 - 25 Oct 1312 bur.Hamburg Cathedral, Hamburg, Germany)
           │     (m. 12 Dec 1275 Lödöse, Sweden)
           │     (m. 12 Dec 1275 Lödöse, Sweden)
           │        └─ Gerard IV of Holstein ( - 1317)
           │         Anastasia of Schwerin-Wittenburg ( - Aft 7 Jun 1314)
           │         (m. Between 30 Jul 1313 and 21 Oct 1313)
           │         (m. Between 30 Jul 1313 and 21 Oct 1313)
           │            └─ Ingeborg of Holstein (Between 1314 and 1317 - Aft 1342)
           │             Konrad I of Oldenburg ( - Bef 9 Feb 1348)(m. Bef 13 May 1339)
           │                └─ Christian V of Oldenburg ( - Between 10 Nov 1399 and 22 Apr 1403) =>
           │                 + Agnes of Honstein (Abt 1360 - 1 Sep 1407)(m. Bef 29 Aug 1377)
           └─ Katarina of Sweden (1245 - ??)
            Siegfried I of Anhalt (Abt 1230 - Aft 25 Mar 1298)(m. Bef 17 Oct 1259)
               └─ Albrecht I of Anhalt ( - Between 17 Aug 1316 and 2 Mar 1317)
                Agnes of Brandenburg ( - 4 Jun 1330 bur.St. Nikolai, Zerbst, Saxony-Anhalt, Germany)(m. 1300)
                   └─ Mathilde of Anhalt ( - Abt 1342)
                    Bernhard III of Anhalt ( - 20 Aug 1348)(m. Abt 1339)
                       └─ Katharina of Anhalt ( - 30 Jan 1390)
                        Magnus II of Brunswick (Abt 1328 - 25 Jul 1373 Leveste, Lower Saxony, Germany)
                        (m. Bef 6 Oct 1356)
                        (m. Bef 6 Oct 1356)
                           └─ This couple were related to each other. Any descendants have been already
                            been listed
                            been listed