Nielsen Hayden genealogy
Ancestors of Marija Jurjewma of Halicz
Bef 1293 - 1341 (> 48 years)
┌── Daniil Romanovich, King of Ruthenia 
(Between 1201 and 1202 - 1264) =>
(Between 1201 and 1202 - 1264) => ┌── Leo Danilowitsch, King of Halicz (Abt 1228 - 1301)(m. Between 1251 and 1252)
(Abt 1228 - 1301)(m. Between 1251 and 1252) │ └── Anna Mstislawna of Novgorod ( - Bef 1252) =>
( - Bef 1252) => │
┌── Jurij I Lvovitsch, King of Halicz (24 Apr 1252 - 1308)
(24 Apr 1252 - 1308) │ │
│ │ ┌── Béla IV, King of Hungary (1206 - 3 May 1270)(m. Abt 1218) =>
(1206 - 3 May 1270)(m. Abt 1218) => │ └── Constance of Hungary (m. Between 1251 and 1252)
(m. Between 1251 and 1252) │ └── Maria Laskarina (Abt 1206 of Nicea, Anatolia - 1270)(m. Abt 1218) =>
(Abt 1206 of Nicea, Anatolia - 1270)(m. Abt 1218) => │
Marija Jurjewma of Halicz (Bef 1293 - 11 Jan 1341)
│
│ ┌── Konrad I of Masovia (Between 1187 and 1188 - 31 Aug 1247)(m. 1207) =>
(Between 1187 and 1188 - 31 Aug 1247)(m. 1207) => │ ┌── Casimir I of Kujawien (Abt 1211 - 14 Nov 1267)(m. 1257)
(Abt 1211 - 14 Nov 1267)(m. 1257) │ │ └── Agafia Svjatoslava of Novgorod ( - Aft 31 Aug 1247)(m. 1207) =>
( - Aft 31 Aug 1247)(m. 1207) => │ │
└── Euphemia of Kujawien ( - 18 Mar 1308)
( - 18 Mar 1308) │
│ ┌── Kasimir I of Oppeln (Between 1176 and 1179 -
│ │ 13 May 1230 bur.Abbey of Czarnowasy, Opole, Poland)(m. Between 1212 and 1220) =>
(Between 1176 and 1179 -│ │ 13 May 1230 bur.Abbey of Czarnowasy, Opole, Poland)(m. Between 1212 and 1220) =>
└── Euphrosyne of Oppeln (Between 1228 and 1230 - 4 Nov 1292)(m. 1257)
(Between 1228 and 1230 - 4 Nov 1292)(m. 1257) └── Viola ( - 7 Sep 1251)(m. Between 1212 and 1220)
( - 7 Sep 1251)(m. Between 1212 and 1220)