Shortly afterwards, Grand Prince Rurik Rostislavich of Kiev summoned the Olgovichi to campaign against Roman Mstislavich of Volodymyr who had begun wreaking havoc on domains belonging to him [REF].
In 1203, Oleg defeated 1,700 Lithuanians; it is plausible that he attacked the Lithuanians in order to help the princes of Polotsk, but the possibility remains that he attacked them in defense of the Dregovichi domains [REF].