Casimir married Hélène Rostislavna de Kiev 1163. Hélène was born Abt 1150; died Abt 1204. [Group Sheet]
Hélène married Vsévolod Sviatoslavich de Kiev 1178. Vsévolod (son of Sviatoslav Vsevolodich de Kiev) died 1212. [Group Sheet]
Mikhail married Maria Romanovna de Galicie 1211. Maria (daughter of Roman Mstislavich de Galicie and Predslava Rurikovna) was born Abt 1190; died 3 Dec 1241. [Group Sheet]
Rostislav married Anne Árpád 1243. Anne (daughter of Béla IV Király Magyarország and Maria Laskarina) was born Abt 1227; died 3 Jan 1270. [Group Sheet]