Nielsen Hayden genealogy
Descendants of Jewfrosinja Jaroslavna of Halicz
Father: Jaroslav Vladimirkovitch (Abt 1135 - 1 Oct 1187)
Mother: Olga Georgievna of Suzdal ( - Abt 1185)
Jewfrosinja Jaroslavna of Halicz
Igor Svjatoslavitsch (10 Apr 1151 - 1202)
   └─ Svjatoslav Igorjewitsch (Abt 1177 - Sep 1211)
    Jaroslawa Rjurikovna of Kiev (m. Oct 1188)
       └─ Agafia Svjatoslava of Novgorod ( - Aft 31 Aug 1247)
        Konrad I of Masovia (Between 1187 and 1188 - 31 Aug 1247)(m. 1207)
           ├─ Casimir I of Kujawien (Abt 1211 - 14 Nov 1267)
           │ Euphrosyne of Oppeln (Between 1228 and 1230 - 4 Nov 1292)(m. 1257)
           │    └─ Euphemia of Kujawien ( - 18 Mar 1308)
           │     Jurij I Lvovitsch, King of Halicz (24 Apr 1252 - 1308)
           │        └─ Marija Jurjewma of Halicz (Bef 1293 - 11 Jan 1341)
           │         Trojden I of Masovia (Between 1284 and 1286 - 13 Mar 1341)(m. Bef 1310)
           │            └─ Euphemia of Masovia (Abt 1310 - Aft 1373 bur.Cieszyn, Silesia, Poland)
           │             Casimir I of Silesia (Between 1276 and 1280 -
           │             Aft 21 Sep 1358 bur.Cieszyn, Silesia, Poland)(m. Between 1321 and 1324)
           │             Aft 21 Sep 1358 bur.Cieszyn, Silesia, Poland)(m. Between 1321 and 1324)
           │                └─ Anna of Silesia (Abt 1325 - 1367 bur.Collegiate Church of the Holy
           │                 Sepulchre, Legnica, Lower Silesia, Poland) =>
           │                 Sepulchre, Legnica, Lower Silesia, Poland) =>
           │                 + Wenzel I of Silesia (Between 1310 and 1318 - 2 Jun 1364 bur.Collegiate
           │                 Church of the Holy Sepulchre, Legnica, Lower Silesia, Poland)(m. Between
           │                 1338 and 1340)
           │                 Church of the Holy Sepulchre, Legnica, Lower Silesia, Poland)(m. Between
           │                 1338 and 1340)
           └─ Siemowit I of Masovia (Abt 1228 - 23 Jun 1262)
            Pereslajawa Danilovna of Halicz ( - 12 Apr 1283)(m. Abt 1248)
               └─ Boleslaw II of Masovia (Abt 1251 - 20 Apr 1313)
                Gaudimanté of Lithuania ( - Between 1288 and 1313)(m. 1279)
                :   └─ Trojden I of Masovia (Between 1284 and 1286 - 13 Mar 1341)
                :    Marija Jurjewma of Halicz (Bef 1293 - 11 Jan 1341)(m. Bef 1310)
                :       └─ This couple were related to each other. Any descendants have been already
                :        been listed
                :        been listed
                Kunigunde of Bohemia (Jan 1265 - 27 Nov 1321)(m. 1291)
                   └─ Waclaw of Masovia (Abt 1293 - 23 May 1336)
                    Dannila of Lithuania ( - 1364)(m. Bef 6 Dec 1320)
                       └─ Anna of Masovia (Bef 1324 - 16 Feb 1363)
                        Heinrich III of Silesia (Between 1312 and 1321 - 13 Apr 1369 bur.Augustinian
                        Cloister, Zagan, Zagan, Silesia, Poland)(m. Bef 6 Sep 1337)
                        Cloister, Zagan, Zagan, Silesia, Poland)(m. Bef 6 Sep 1337)
                           └─ Jadwiga of Silesia (Bef 1350 -
                            27 Mar 1390 bur.Legnica, Lower Silesia, Poland) =>
                            27 Mar 1390 bur.Legnica, Lower Silesia, Poland) =>
                            + Ruprecht of Silesia (Between 1340 and 1347 - Bef 12 Jan 1409 bur.Legnica,
                            Lower Silesia, Poland)(m. Bef 10 Feb 1372)
                            Lower Silesia, Poland)(m. Bef 10 Feb 1372)