continued to favour his royal policies. In August 1607, previously being persuaded by Lew Sapieha, he offered his services to False Dimitri. Under Dimitri he captured the city of Wiaźma and successfully crushed the Vasili IV Shuysky troops on 2 October 1608. In 1609, he commanded the unresolved battle near Kalyazin on the Volga river. After the start of king Sigismund's Moscow expedition in 1605 (known as the Dimitriads), initially Sapieha preferred to live in peace and not support the monarch at this occasion, however, under the heavy pressure of the Polish nobility and the army, he was not able to refuse and decided to aid the king in the battles on Russian territory. On 25 June 1610 the gathered troops chose Jan Piotr Sapieha as their Hetman, who would replace the previously deceased General Różyński. In July, he sent Sapieha to Moscow where, on 27 August he signed an agreement with the Boyar Duma that deposed False Dimitri and instead give the tsarist crown to Prince Władysław (future king Władysław IV). After the death of Dmitri, in December 1610, Sapieha unsuccessfully tried to capture the village of Kaluga, however, he was more successful in capturing the town of Peremyszl later on. From January to March 1611 he led the negotiations with the boyars and hoped to either weaken the position of the king's troops favoured, supported and personally commanded by the great Hetman Stanisław Żółkiewski, or place himself on the Russian throne. On 27 March 1611 the king, worried about his "popularity" among the military commanders in the East, promised Sapieha payment and salaries in order to receive more troops. Eventually the monarch gained the trust of the Hetman. Jan Piotr joined him on 8 May, and on 18 June they arrived in Moscow; however, he was displeased and somewhat refused to fight that besieged the Moscow Kremlin. Demoralized by the lack of paid salaries and of poor hygienic conditions in the camps, the Polish soldiers fell into mental apathy and immediately stopped fighting. On 15 September Sapieha became seriously ill and was transferred to the central Kremlin palace, where he died on 15 October 1611. Marriage and issue Jan Piotr married Zofia Weiher h. Weiher and had nine children. Among others: Andrzej Stanisław Sapieha, castellan of Troki and Wilno, married Anna Heidenstein Paweł Jan Sapieha, Hetman, married firstly Zofia Zienowicz and secondly Barbara Kopeć Krystyna Sapieha, married firstly