Eudoxia Iziaslavna of Kiev (Ukrainian: Євдокія Ізяславна, Russian: Евдокия Изяславна, Polish: Eudoksja Izjasławówna; c. 1131 – c. 1187), was a Kievan Rus' princess member of the Izyaslavichi of Volhynia and by marriage Duchess of Greater Poland and since 1173 High Duchess of Poland.
[3][better source needed] In 1154, Eudoxia married Mieszko III the Old, Duke of Greater Poland, who had recently lost his first wife, Princess Elisabeth of Hungary.
However, their reign was short-lived: in 1177 Mieszko III's eldest son Odon rebelled against him, with the help of his uncle Casimir II the Just.
The main reason of Odon's rebellion was the favoritism showed by Mieszko III to his children with Eudoxia, and the attempts of the High Duke to force him to become a priest, in order to eliminated from the succession.
Mieszko III was forced to escape and went to Bohemia (where he asked the help of his son-in-law Duke Sobeslav II unsuccessfully), Germany and Pomerania (there, Mieszko III obtain the support of his other son-in-law Duke Bogislaw I).