Royal kin and queens · The Chernigov land of the Olgovichi · as at first light, 1 January 1200

Mstislav of Kozelsk

A younger son of Sviatoslav Vsevolodovich, Mstislav is remembered as the ancestor of the Kozelsk princes and as the prince of Chernigov who died at the Kalka in 1223.

His seat in 1200 is not pinned; Kozelsk, in the Vyatichi forest on the Zhizdra, is the usual guess, because his descendants held it.

Who he is

Name
Mstislav Sviatoslavich
Title
Prince of the Olgovichi; Kozelsk by the later genealogies (not pinned for 1200)
Since
Not pinned
Born
Not pinned
Family
Son of Sviatoslav Vsevolodovich of Kiev; later prince of Chernigov; killed at the Kalka on 31 May 1223; the princes of Kozelsk of 1238 descend from him
Confidence
low

The later princes of Kozelsk descend from him; no source we could reach places him at Kozelsk in 1200.

Overlord

Igor, as senior prince.

What it holds

  • Kozelsk and the Zhizdra country (not pinned for 1200)

How it was acquired

Not recorded.

Allies and rivals

His brothers Oleg, Vsevolod and Gleb.

Wealth

Furs, honey and wax of the Vyatichi forest.

Military

His retinue.

Threats

  • Raids from Smolensk or Vladimir across the Vyatichi forest, as in 1196

Where the sources disagree

Evidence: Inference from the later Kozelsk line; nothing for 1200.

On the map: Low confidence; the ground is the Olgovichi's whoever held it.

Primary sources for Chernigov (the Olgovichi)

Chronicles, registers, sagas and inscriptions written in or near 1200 that cover this entry. Each has its own page with editions, translations and where to read it.

  • The Hypatian Chronicle (the Kievan Chronicle compiled about 1200 at the Vydubichi monastery; the Galician-Volhynian Chronicle in the 13th century). The southern record. Read online
  • The Laurentian Chronicle (the Suzdal continuation kept in the late 12th and 13th centuries; manuscript 1377). The court record of Vsevolod III of Vladimir. Read online
  • The Tale of Igor's Campaign (about 1187 to 1200 (disputed)). A poem on Igor Sviatoslavich's defeat by the Polovtsians in 1185 that addresses the princes of the day by name: Vsevolod of Vladimir, Rurik and David Rostislavich, Yaroslav of Galich, Roman of Volhynia and the Olgovichi of Chernigov, of whom Igor himself was prince from 1198. Read online

Sources and studies

  1. Kozelsk (ru.wikipedia)
  2. Chernigov principality (ru.wikipedia)

Last revised 4 November 2026. Published 4 November 2026. Suggest a correction on the OMNIA Discord.