Born on 7 March 1790 in Warsaw, died on 21 November 1869 in Cracow. He came from the wealthy gentry family of a famous politician Tomasz Adam (1735 - 1817), the parliamentarian of the Commonwealth of the Two Nations, the Duchy of Warsaw and the Kingdom of Poland. Educated in the country, first at home, then at the Collegium Nobilium in Warsaw 1800 - 1807. In the army of the Duchy 1808, distinguished himself in the Polish- Austrian campaign of 1809 in the battle of Raszyn (awarded the Virtuti Militari Cross) and the Russian campaign of 1812 - 1813 (decorated with the Knight Cross of Honorary Legion), promoted to lieutenant-colonel of horse artillery 1813. Designated by General Jan Henryk D±browski, he held talks with Tsar Alexander I on the future of the Duchy of Warsaw in Petersburg in August 1814, then retired from the service. Debarred from politics, he took to translating Italian and English poetry, a member of the Friends of Sciences Society 1829. He carried on social work, founded and presided the Rumford Soup Society in Warsaw 1826, a member of the Society for Christian Morality in Paris 1828. He stood for the Kingdom of Poland's Sejm several times, but never became a deputy for procedural reasons. His candidacy for the post of castellan submitted in the senate in 1825, did not win approval, either. He sat in the 1830 Sejm as a deputy from Piotrków district; connected with the parliamentary opposition, he won renown and respect. He represented the conservative approach in social issues, strongly opposing, however, violation of the 1815 Constitution, specially fighting against an article from 1825 suppressing publicity of sejm debates. He headed a mediation mission of a group of Kalisz district deputies to the Grand Duke Constantine about vexations against the opposition. After the outbreak of the November Uprising, he was in the Administrative Council, participated in a delegation to the Grand Duke Constantine and conduced to an agreement which allowed him to leave the country. At the first sejm sitting on 18 December 1830, he was unanimously elected marshal of the deputy chamber. Holding the office, he highly contributed to passing a resolution on the dethronement of Tsar Nicholas I on 25 January 1831, and resolutely objected to any negotiations with the tsarist authorities. On capturing Warsaw by the Russian army, he still chaired the debates, first in Zakroczym, then in Płock. He started preparations to summon the sejm outside the Kingdom, secured sejm documents against the enemy. Arrested in Cracow by the Austrian authorities, he was finally interned in Graz on honourable conditions. Retired from political activity in spite of appeals of Paris emigration activists, only during the Crimean war in 1855 he addressed emperor Napoleon III with a memorial on the reconstruction of the Polish state. Returned to Cracow in 1862. Son of Tomasz Adam Ostrowski.