Nielsen Hayden genealogy
Descendants of Helene of Denmark
Abt 1180 - 1233 (~ 53 years)Father: Valdemar I den Store, King of Denmark (14 Jan 1131 - 12 May 1182 Vordingborg, Denmark)
Mother: Sofie of Polotsk (Abt 1141 - 5 May 1198)
Helene of Denmark (Abt 1180 - 22 Nov 1233)
Wilhelm of Brunswick-Lüneburg (11 Apr 1184 Winchester, Hampshire, England -
13 Dec 1213 Lüneburg, Lower Saxony, Germany)(m. Jul 1202 Hamburg, Germany)
13 Dec 1213 Lüneburg, Lower Saxony, Germany)(m. Jul 1202 Hamburg, Germany)
   └─ Otto I of Brunswick-Lüneburg (1204 - 19 Jun 1252)
    Matilde von Brandenburg (Abt 1210 - 10 Jun 1261)
       ├─ 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)
       │    ├─ 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)
       │    │ (m. 1284)
       │     + Adelheid von Ravensberg ( - Aft 13 Apr 1338)(m. 1297)
       ├─ 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)
       ├─ 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)
       │    └─ 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)
       └─ 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)
           ├─ 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)
            + Henryk I-III von Schliesen (Between 1251 and 1260 - 9 Dec 1309)(m. Bef Apr 1290)