The Olgovichi or Olhovychi[a] were one of the four dominant princely clans of Kievan Rus' in the 12th and 13th century.[b] First mentioned in the Hypatian continuation of the Primary Chronicle (PVL) under the year 1116[c] and literally meaning "the sons of Oleg", they were named after Oleg I Sviatoslavich, Prince of Chernigov (r. 1094–1097) and Principality of Novgorod-Seversk (r. 1097–1115).[5][6] He was the grandson of Yaroslav the Wise; ruling dynasty in the Chernigov principality, Novgorod-Seversky principality, as well as with interruptions: in the Kiev, Galicia, Volyn, Pereyaslav principalities, Novgorod lands.[7]
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