Catherine of Chernigov
Catherine, Kateryna or Ekaterina of Chernigov (died 12 April 1166) was princess consort of Chernigov (modern Chernihiv) as the wife of Sviatoslav Olgovich (r. 1154–1164), and princess regnant of Chernigov for a few days after his death (r. 1164–1164).