Nielsen Hayden genealogy
Descendants of Leo Danilowitsch, King of Halicz
Abt 1228 - 1301 (~ 73 years)Father: Daniil Romanovich, King of Ruthenia (Between 1201 and 1202 - 1264)
Mother: Anna Mstislawna of Novgorod ( - Bef 1252)
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)
           └─ 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)
            (m. Between 1321 and 1324)