Nielsen Hayden genealogy
Descendants of Mieszko III, High Duke of Poland
Abt 1126 - 1202 (~ 76 years)Father: Boleslaw III "Wrymouth", King of Poland (20 Aug 1085 - 28 Oct 1138)
Mother: Salome von Berg-Schelklingen (Bef 1101 - 27 Jul 1144)
Mieszko III, High Duke of Poland (Abt 1126 - 13 Mar 1202)
Elisabeth of Hungary (Abt 1128 - Bef 1155)
:   ├─ Elisabeth of Poland ( - 2 Apr 1209)
:   │ Konrad von Nieder-Lausitz (Abt 1156 - 6 May 1210)(m. Aft 29 Jan 1180)
:   │    └─ Mathilde von Nieder-Lausitz ( - 1255)
:   │     Albrecht II of Brandenburg (Abt 1177 - 25 Feb 1220)(m. Aug 1205)
:   │        ├─ Matilde von Brandenburg (Abt 1210 - 10 Jun 1261) =>
:   │        │ + Otto I of Brunswick-Lüneburg (1204 - 19 Jun 1252)
:   │        │ + Sophie of Denmark (1217 - 2 Nov 1247 Flensburg, Schleswig-Holstein, Germany)(m. 1236)
:   │        │ + Jutta of Saxony ( - 23 Dec 1287)(m. 7 May 1255)
:   │        └─ Otto III of Brandenburg (Abt 1215 - 9 Oct 1267) =>
:   │         + Beatrix of Bohemia ( - 25 May 1286)(m. Jan 1243)
:   ├─ Odon (Between 1141 and 1149 - 20 Apr 1194)
:   │ Wjatscheslawa Jaroslawna of Halicz ( - Aft 1200)(m. Aft 1184)
:   │    ├─ Euphrosyne ( - 23 Aug 1235)
:   │    │ Swietopelk II of Eastern Pomerania (Between 1190 and 1200 - 10 Jan 1266)(m. Abt 1217)
:   │    │     + Jaromar II of Rügen (Abt 1218 - 1260)
:   │    └─ Wladislaw Odonicz (Abt 1190 - 5 Jun 1239)
:   │     Jadwiga ( - 29 Dec 1249)(m. Between 1218 and 1220)
:   │        │ + Wladislaw of Oppeln (Abt 1225 - Abt 27 Aug 1281)(m. 1251)
:   │        │ + Elisabeth von Schlesien (Between 1224 and 1232 - 16 Jan 1265 Modrze, Poznan, Poland)(m. 1244)
:   │        │ + Helene of Hungary (Abt 1244 Esztergom, Hungary - 6 Mar 1298 Gniezno, Poland)(m. 1257)
:   │         + Konrad I (Between 1228 and 1231 - Between 18 Apr 1273 and 9 Oct 1274)(m. 1249)
:   ├─ Ludmilla of Poland (Abt 1150 - 1223)
:   │ Frédéric I (Abt 1143 - 1207)
:   │    └─ Frédéric II (Abt 1172 - 10 Oct 1213)
:   │     Agnes de Bar (Abt 1177 - 21 Jun 1226)
:   │        │ + Wernher I ( - 1228 near Acre, Palestine)(m. Abt 1220)
:   │         + Katharina von Limburg (Abt 1215 - 1255)(m. Aug 1225)
:   └─ Judith of Poland (Abt 1152 - Aft 1201)
:    Bernhard III of Saxony (1140 - 9 Feb 1212)
:       ├─ Heinrich I von Anhalt (Abt 1170 - Between 1251 and 1252)
:       │ Irmgard von Thüringen (Abt 1197 - Abt 1244)(m. Abt 1211)
:       │    │ + Boleslaw II of Silesia (Between 1220 and 1225 - Abt 26 Dec 1278)
:       │    │ (m. Between 8 May 1242 and 18 Oct 1242)
:       │    │ (m. Between 8 May 1242 and 18 Oct 1242)
:       │    │ + Nikolaus I of Werle (Abt 1213 - 10 May 1277)(m. Oct 1231)
:       │    ├─ Bernhard I of Anhalt (Abt 1220 - Between 1286 and 1287) =>
:       │    │ + Sophie Abelsdatter of Denmark & S¢nderjylland (Abt 1240 - Aft 1284)
:       │    └─ Siegfried I of Anhalt (Abt 1230 - Aft 25 Mar 1298) =>
:       │     + Katarina of Sweden (1245 - ??)(m. Bef 17 Oct 1259)
:       └─ Albrecht I of Saxony (Abt 1180 - 8 Nov 1261)
:        Agnes von Thüringen (Abt 1206 - Bef 1247)
:        :    + Johann I of Brandenburg (1213 - 4 Apr 1266)(m. 7 May 1255)
:        Agnes of Austria (19 Feb 1206 - 29 Jul 1226)(m. 1222)
:        :    + Erik IV-VI, King of Denmark (1216 - 10 Aug 1250)(m. 17 Nov 1239)
:        Helene of Brunswick-Lüneburg (18 Mar 1223 - 6 Sep 1273)(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)
Jevdokija of Ruthenia (Aft 1130 - ??)
   └─ Anastasia of Poland
    Bogislaw I of Pomerania (1130 - 18 Mar 1187)(m. Apr 1177)
       └─ Bogislaw II of Pomerania (Abt 1178 - 23 Jan 1220)
        Miroslawa of Eastern Pomerania ( - Aft 1233)
           └─ Barnim I of Pomerania (Between 1210 and 1218 - Abt 13 Nov 1278) =>
            + Marianna ( - Abt 27 Jun 1252)(m. Abt 1238)
            + Mathilde von Brandenburg (Between 1248 and 1255 - 20 Dec 1316)(m. Bef 20 May 1267)