Mstislav II Svyatoslavich (c. 1168 – May 31, 1223) was a Rus' prince (a member of the Rurik dynasty). His baptismal name was Panteleymon. He was probably prince of Kozelsk (1194–1223), of Novgorod-Seversk (1206–1219), and of Chernigov (1215/1220–1223). He was killed in the Battle of the Kalka River.
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