Nielsen Hayden genealogy
Descendants of Sofie of Polotsk
Abt 1141 - 1198 (~ 57 years)Father: Volodar of Minsk ( - Aft 1167)
Mother: Richiza of Poland (12 Apr 1116 - Aft 25 Dec 1155)
Sofie of Polotsk (Abt 1141 - 5 May 1198)
Valdemar I den Store, King of Denmark (14 Jan 1131 - 12 May 1182 Vordingborg, Denmark)(m. Abt Sep 1157)
   ├─ Richiza of Denmark ( - 8 May 1220 bur.Ringsted, Zealand, Denmark)
   │ Erik X Knutsson, King of Sweden (Abt 1180 - 10 Apr 1216)(m. 1210)
   │    └─ Ingeborg Eriksdotter (Abt 1212 - 1254)
   │     Birger Magnusson (Abt 1200 - 21 Oct 1266)(m. Abt 1235)
   │        │ + Heinrich I of Werle (Abt 1235 - 8 Oct 1291)(m. 1262)
   │        ├─ Valdemar Birgersson, King of Sweden (1237 - 26 Dec 1302) =>
   │        │ + Sofia of Denmark, Queen Consort of Sweden (Abt 1241 - 1286)(m. 1260)
   │         + Siegfried I of Anhalt (Abt 1230 - Aft 25 Mar 1298)(m. Bef 17 Oct 1259)
   ├─ Sophie Valdemarsdatter of Denmark (1159 - 1208)
   │ Siegfried III von Orlamünde (Abt 1155 - 1206)(m. 1181)
   │    ├─ Irmgard von Orlamünde
   │    │ Heinrich II von Schwarzburg (Between 1150 and 1155 - 20 Feb 1236)
   │    │    └─ Günther VII von Schwarzburg (Abt 1210 - 1274) =>
   │    │     + Sophie ( - Aft 1268)
   │    └─ Hermann II von Orlamünde (Abt 1184 - 27 Dec 1247)
   │     Beatrix von Meran (1210 - 9 Feb 1270)
   │         +
   ├─ Valdemar II Sejr, King of Denmark (28 Jun 1170 - 28 Mar 1241)
   │ Berengaria (Abt 1194 Coimbra, Portugal - 27 Mar 1221 Ringsted, Zealand, Denmark)(m. Between 1213 and 1214)
   │    ├─ Erik IV-VI, King of Denmark (1216 - 10 Aug 1250)
   │    │ Jutta of Saxony (Abt 1224 - ??)(m. 17 Nov 1239)
   │    │    └─ Sofia of Denmark, Queen Consort of Sweden (Abt 1241 - 1286) =>
   │    │     + Valdemar Birgersson, King of Sweden (1237 - 26 Dec 1302)(m. 1260)
   │    ├─ Sophie of Denmark (1217 - 2 Nov 1247 Flensburg, Schleswig-Holstein, Germany)
   │    │ Johann I of Brandenburg (1213 - 4 Apr 1266)(m. 1236)
   │    │    └─ Konrad I (Between 1236 and 1245 - Between 15 Mar 1304 and 21 May 1304) =>
   │    │     + Konstancja of Poland (Between 1245 and 1246 - 10 Oct 1281)(m. 1260)
   │    ├─ Abel, King of Denmark (1218 - 29 Jun 1252)
   │    │ Mechtilde von Holstein (1225 - 1288)(m. 25 Apr 1237)
   │    │    └─ Sophie Abelsdatter of Denmark & S¢nderjylland (Abt 1240 - Aft 1284) =>
   │    │     + Bernhard I of Anhalt (Abt 1220 - Between 1286 and 1287)
   │    └─ Christoffer I, King of Denmark (1219 - 29 May 1259 Ribe, Jutland, Denmark)
   │     Margarete Tczewsko-Lubiszewska (Between 1230 and 1234 -
   │     Dec 1282 Rostock, Mecklenburg-Vorpommern, Germany)(m. 1248 Fehmarn, Ostholstein, Germany)
   │     Dec 1282 Rostock, Mecklenburg-Vorpommern, Germany)(m. 1248 Fehmarn, Ostholstein, Germany)
   │        └─ Eric V Klipping, King of Denmark (1249 Lolland, Denmark - 22 Nov 1286 Finderup, Viborg, Denmark) =>
   │         + Agnes of Brandenburg (Between 1256 and 1261 - Oct 1304 bur.Ringsted, Denmark)(m. 11 Nov 1273)
   └─ 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)
           │ + Wizlaw II of Rügen (1240 - 29 Dec 1302)(m. Between 1263 and 1265)
           ├─ Helene of Brunswick-Lüneburg (18 Mar 1223 - 6 Sep 1273) =>
           │ + Albrecht I of Saxony (Abt 1180 - 8 Nov 1261)(m. Between 1247 and 1248)
            + Alessina de Monferrato ( - 5 Feb 1285)(m. 1 Nov 1266)