Catherine of Chernigov

[3] Not until in later sources, she is named Ekaterina or Catherine, and identified as the daughter of Petryl or Petrilo, the posadnik of Novgorod.

[citation needed] The Kievan Chronicle mentions sub anno 6667 (1159) that there was a "princess' city for Sviatoslav's defence"[4] (Old East Slavic: городъ кнѧгининъ на щитъ Ст҃ославлеѣ[5]) named "Oblov" (Ѡбловь[5]) on the boundary between the lands of Smolensk and Chernigov, that was captured or razed by Iziaslav Davidovich.

[1] According to Dimnik (2003), this meant that Sviatoslav's princess consort Catherine of Chernigov owned this town, which she probably received as a wedding gift.

[6] Upon Sviatoslav's death in 1164, the widowed Catherine briefly ruled as princess regnant of Chernigov.

)son Oleg to come to Chernigov quickly, and told the city's leading men not inform her brother-in-law Sviatoslav Vsevolodich, who was the rightful heir to the Chernigovian throne.

Catherine and her sons sitting at the deathbed of Sviatoslav Olgovich, while Oleg and Sviatoslav Vsevolodich march on Chernigov. Miniature from the Tsar Book (16th century)
The bishop's letter to Vsevolodich: "...the princess [ kniaginia ] rules [ sedit' ] in cahoots with the children, and she has many goods. So come quickly, Oleg has not yet come, and you can come to an agreement with him." [ 7 ] [ 3 ]