Wincenty Aleksander Korwin Gosiewski de armis Ślepowron (c. 1620 – 29 November 1662) – was a Polish nobleman, general, Field-Commander of Lithuania from 1654, Grand Treasurer of Lithuania and Lithuanian Great-Quartermaster since 1652, General of Artillery of Lithuania from 1651, Grand-Master of the Pantry of Lithuania from 1646 (honorary court title). Biography Early life and first battles After his father Aleksander, he became District-Governor of Puńsk and Marków, after his brother Krzysztof he became also District-Governor of Velizh. Speaker of the Parliament in Warsaw from 21 to 24 December 1650. Polish military commander and diplomat. He came from the noble family Gosiewski entitled to use the coat of arms Ślepowron. He was Aleksander Gosiewski'son, Palatine-Governor of Smolensk. He married Magdalena Konopacka, Elbląg Castle-Commander's daughter. He graduated from the Vilnius University and studied in Vienna, Padua and Rome. After returning home he was appointing by King Władysław IV Vasa Grand Master of the Pantry of Lithuania, fulfilling this office he signed the document electing John II Casimir Vasa. He began his military service as commander of the regiment that fought in 1648 running under the leadership of the Lithuanian Great-Commander Janusz Radziwiłł. In July 1649 as Janusz Radziwiłł's deputy commander in chief, he had a major part broken the troops of the Zaporozhian Cossacks in the Battle of Loyew. As Artillery General in Lithuania in 1651, at the Battle of Chernobyl he broke Cossack troops commanded by colonels Antonov and Adamowicz. He participated as a Commissioner in the peace talks that led to the agreement of Biała Cerkiew. Political and military career In 1654 he received the Commander's baton/mace from Polish prince Janusz Radziwiłł, who was appointing the Lithuanian Great-Commander. During the Swedish invasion he played an important role politically and militarily. In 1655, he accepted the Kiejdany act of recognition signed between usurper King Charles X Gustav of Sweden and Prince Janusz Radziwiłł, but soon came against this act taking action which aim was to help the Russian side. Despite being under surveillance, he managed to make contact with the Russian diplomat Vasily Likharov. Trapped by Janusz Radziwiłł he was catch in Kiejdany, where, as state prisoner was then transferred to Królewiec/Königsberg. While he was in captivity Karl Gustav was urged to attack Russia and a written confirmation of that intention was given to Tsar Alexis of Muscovy after his release. In the spring of 1656 he escaped from Prussian