Nielsen Hayden genealogy
Ancestors of Konstancja of Poland
1246 - 1281 (~ 36 years) ┌── Wladislaw Odonicz (Abt 1190 - 5 Jun 1239)(m. Between 1218 and 1220)
│ └── Wjatscheslawa Jaroslawna of Halicz ( - Aft 1200)(m. Aft 1184) =>
│
┌── Przmyslaw I (1220 - 4 May 1257)(m. 1244)
│ └── Jadwiga ( - 29 Dec 1249)(m. Between 1218 and 1220)
│
Konstancja of Poland (Between 1245 and 1246 - 10 Oct 1281)
│
│ ┌── Henryk I of Silesia (Between 1167 and 1174 - 19 Mar 1238)(m. Abt 1186) =>
│ ┌── Henryk II of Silesia (Between 1196 and 1204 - 9 Apr 1241 Legnica, Lower Silesia, Poland)
│ │ (m. Between 1214 and 1218)
│ │ └── St. Hedwig von Meran (Between 1176 and 1180 - 13 Oct 1243)(m. Abt 1186) =>
│ │
└── Elisabeth von Schlesien (Between 1224 and 1232 - 16 Jan 1265 Modrze, Poznan, Poland)(m. 1244)
│
│ ┌── Przemysl Ottokar I, King of Bohemia (Abt 1155 - 15 Dec 1230)(m. Abt 1198) =>
└── Anna of Bohemia (Between 1201 and 1204 Prague, Bohemia - 23 Jun 1265)(m. Between 1214 and 1218)
└── Constance of Hungary ( - 4 Dec 1240)(m. Abt 1198) =>