Nielsen Hayden genealogy
Descendants of Erik I, King of Denmark
Abt 1060 - 1103 (~ 43 years)Father: Swein II Estridsson, King of Denmark (Abt 1026 England - Apr 1074 Søderup, near Åbenrå, Sonderjylland, Denmark)
Erik I, King of Denmark (Abt 1060 Slangerup, North Zealand, Denmark - 10 Jul 1103 Paphos, Cyprus)
:   └─ Harald Kesja (Abt 1080 - 4 Jun 1134)
:    Ragnhild of Norway
:       └─ Björn Jernside (Abt 1100 - 4 Jun 1134)
:        Katharina of Sweden
:           └─ Christine Björnsdatter, Queen of Sweden (Between 1120 and 1125 - ??) =>
:            + St. Erik IX, King of Sweden (Abt 1120 - 18 May 1159 Uppsala, Uppsala, Sweden)(m. Bef 1158)
Boedil Thorgunnasdotter (Abt 1062 - 1103 near Jerusalem)(m. Bef 1086)
   └─ St. Canute Lavard (1096 Roskilde, Zealand, Denmark -
    7 Jan 1131 Haraldsted forest, near Ringsted, Zealand, Denmark)
    7 Jan 1131 Haraldsted forest, near Ringsted, Zealand, Denmark)
    Ingeborg of Kiev (Abt 1100 - ??)(m. Abt 1116)
       └─ Valdemar I den Store, King of Denmark (14 Jan 1131 - 12 May 1182 Vordingborg, Denmark)
        Sofie of Polotsk (Abt 1141 - 5 May 1198)(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)
           ├─ Sophie Valdemarsdatter of Denmark (1159 - 1208) =>
           │ + Siegfried III von Orlamünde (Abt 1155 - 1206)(m. 1181)
           ├─ 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)
           │ (m. Between 1213 and 1214)
            + 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)