Nielsen Hayden genealogy
Ancestors of Rosztiszlo, King of Bulgaria; Grand Duke of Kiev
1225 - Abt 1264 (~ 52 years) ┌── Svjatoslav III, Grand Prince of Kiev (Abt 1120 - 24 Jul 1194)(m. 1143) =>
┌── Vsevolod III, Grand Prince of Kiev ( - Between 1214 and 1215)(m. 1178)
│ └── Marija Wasilkowna (m. 1143) =>
│
┌── St. Michael of Chernigov, Grand Prince of Kiev (Abt 1185 - 20 Sep 1246)
│ │
│ │ ┌── Casimir II (1138 - 5 May 1194) =>
│ └── (Unknown) of Poland (1164 - 1194)(m. 1178)
│
Rosztiszlo, King of Bulgaria; Grand Duke of Kiev (Between 1212 and 1225 - Abt 1264)
│
│ ┌── Mstislaw II Chabry, Grand Prince of Kiev (Abt 1125 - 13 Aug 1172)(m. Between 1151 and 1152) =>
│ ┌── Roman, Grand Prince of Kiev (Aft 1160 - 19 Jun 1205 Zawichost, Poland)
│ │ └── Agnieszka of Poland (1137 - Aft 1182)(m. Between 1151 and 1152) =>
│ │
└── Marija Romanowna of Halicz ( - Aft 1241)
│
│ ┌── Rjurik II Wassilij, Grand Prince of Kiev (Abt 1144 - Abt 1215)(m. Bef 1172) =>
└── Predslawa Rjurikowna ( - Aft 1202)
└── Anna Georgiewna ( - Between 1205 and 1214)(m. Bef 1172) =>