Nielsen Hayden genealogy
Descendants of Sofia of Denmark, Queen Consort of Sweden
Abt 1241 - 1286 (~ 45 years)Father: Erik IV-VI, King of Denmark (1216 - 10 Aug 1250)
Mother: Jutta of Saxony (Abt 1224 - ??)
Sofia of Denmark, Queen Consort of Sweden (Abt 1241 - 1286)
Valdemar Birgersson, King of Sweden (1237 - 26 Dec 1302)(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)
           └─ Ingeborg of Holstein (Between 1314 and 1317 - Aft 1342) =>
            + Konrad I of Oldenburg ( - Bef 9 Feb 1348)(m. Bef 13 May 1339)