Nielsen Hayden genealogy
Descendants of Daniil Romanovich, King of Ruthenia
1202 - 1264 (~ 63 years)Father: Roman, Grand Prince of Kiev (Aft 1160 - 19 Jun 1205 Zawichost, Poland)
Mother: Anna Komnena
Daniil Romanovich, King of Ruthenia (Between 1201 and 1202 - 1264)
Anna Mstislawna of Novgorod ( - Bef 1252)
   ├─ Pereslajawa Danilovna of Halicz ( - 12 Apr 1283)
   │ Siemowit I of Masovia (Abt 1228 - 23 Jun 1262)(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)
   │     Kunigunde of Bohemia (Jan 1265 - 27 Nov 1321)(m. 1291)
   │         + Dannila of Lithuania ( - 1364)(m. Bef 6 Dec 1320)
   └─ Leo Danilowitsch, King of Halicz (Abt 1228 - 1301)
    Constance of Hungary (m. Between 1251 and 1252)
       └─ Jurij I Lvovitsch, King of Halicz (24 Apr 1252 - 1308)
        Euphemia of Kujawien ( - 18 Mar 1308)
           └─ Marija Jurjewma of Halicz (Bef 1293 - 11 Jan 1341) =>
            + Trojden I of Masovia (Between 1284 and 1286 - 13 Mar 1341)(m. Bef 1310)