Nothing is known about Viacheslava's first years; she was one of three children and their only daughter. She had two brothers, Ivan and Vladimir (who was confused in several sources as husband of Princess
Richeza of Poland). Both died unmarried and apparently childless. Around 1137 she was married to
Bolesław, son of the Polish Duke
Bolesław III Wrymouth. The wedding was probably orchestrated by Bolesław's mother
Salomea of Berg, who wanted to secure a Russian alliance against her stepson, the later
Władysław II the Exile. On 11 February 1138 Prince Vsevolod died and on 28 October of that year Duke Bolesław III also died, leaving in
his will his domains divided between his sons. Prince Bolesław received the Masovian state as Bolesław IV, Duke of
Masovia and
Kuyavia, and Viacheslava became in the Duchess consort. In 1141 Viacheslava accompanied her husband at the meeting of
Łęczyca, convened at the initiative of her mother-in-law Dowager Duchess Salomea. In 1146 Viacheslava became in the new High Duchess of Poland when her husband expelled his older half-brother Władysław II and became in the ruler of
Kraków and
High Duke of Poland. Viacheslava probably died during the 1160s, because by 31 December 1167 High Duke Bolesław IV named his second wife Maria. She probably was buried beside her husband in the
Płock Cathedral.
Duchess Anastasia's Gospel Book After Viacheslava's death, her husband gave to the cisternian monastery a Gospel Book bound in silver in her memory, called ''
Duchess Anastasia's Gospel Book. Anastasia was probably the Latin or Greek equivalent of her name, according to her chronicler Jan Długosz. Also, he named Viacheslava Princess of Halicz'' and placed her death in 1158 during childbirth. The wedding date of 1151 given by the chronicler is incorrect. The Gospel Book was probably made around 1160. ==Issue==