Nielsen Hayden genealogy
Marija of Serbia
- Aft 1190(
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- 1 Marija of Serbia [1] d. Aft 1190
- Konrad II von Znaim
- 2 Helene von Znaim [1.1] d. Between 1202 and 1206
- Casimir II b. 1138 d. 5 May 1194
- 3 Konrad I of Masovia [1.1.1] b. Between 1187 and 1188 d. 31 Aug 1247
- Agafia Svjatoslava of Novgorod d. Aft 31 Aug 1247
- 4 Casimir I of Kujawien [1.1.1.1] b. Abt 1211 d. 14 Nov 1267
[ =>]
- 4 Siemowit I of Masovia [1.1.1.2] b. Abt 1228 d. 23 Jun 1262
[ =>]
- 4 Casimir I of Kujawien [1.1.1.1]
- 3 Konrad I of Masovia [1.1.1]
- 2 Helene von Znaim [1.1]