Nielsen Hayden genealogy
Descendants of Cecilia
Cecilia
Svjatoslav II, Grand Prince of Kiev (1027 - 27 Dec 1076)
   └─ Oleg Michael (Abt 1058 - 1 Aug 1115)
    Theophano Musalonissa (m. Bef 1083)
       ├─ Vsevolod II, Grand Prince of Kiev (Abt 1085 - 1 Aug 1146)
       │ Marija Mstislawna of Kiev ( - 1179)
       │    └─ Svjatoslav III, Grand Prince of Kiev (Abt 1120 - 24 Jul 1194) =>
       │     + Marija Wasilkowna (m. 1143)
       └─ Svjatoslav II Nikolaj (Abt 1086 - 15 Feb 1164)
        Marija of Novgorod ( - Apr 1164)(m. 1136)
            + Jewfrosinja Jaroslavna of Halicz