On 9 January 1610 Mikhail Skopin-Shuisky sent Grigory Valuyev with 500 soldiers to assist in relieving the Siege of Troitse-Sergiyeva Lavra, laid by Polish commanders Jan Piotr Sapieha and Aleksander Józef Lisowski. After Mikhail Skopin-Shuisky’s sudden death in April 1610, Valuyev was transferred under the command of Dmitry Shuisky and sent to defend the western borders from the army of Hetman Stanisław Żółkiewski. On 11 May 1610 Grigory Valuyev, together with Swedish commanders Jacob De la Gardie and Evert Horn, expelled the Polish army from Joseph-Volokolamsk Monastery and rescued Metropolitan Filaret of Rostov from Roman Ruzhinsky (commander of False Dmitry II’s army in Tushino). After that, Valuyev and Prince Fyodor Yeletsky were put in charge of a unit stationed in a village of Tsaryovo-Zaymishche and responsible for providing cover for the army of Dmitry Shuisky (located near Mozhaysk). Stanisław Żółkiewski besieged Tsaryovo-Zaymishche and then led the rest of his army towards Mozhaysk, defeating the Russians at the Battle of Klushino. The hetman then returned to Tsaryovo-Zaymishche and offered the besieged to surrender.