Osman Pazvantoğlu (Ottoman Turkish: عثمان; 1758 – January 27, 1807 in Vidin) was an Ottoman mercenary, the de factoVizier of the Sanjak of Vidin after 1794 as a rebel against Ottoman rule, amnestied and recognized in 1799 as pasha by the sultan, continuing rebellion the next year. Initially serving as a mercenary in Wallachia, he wrested the Sanjak of Vidin and ruled in defiance of the Ottoman sultan, and fought other Ottoman pashas and made incursions into the Sanjak of Smederevo, Wallachia, and Revolutionary Serbia during the Serbs' rebellion.
Đorđe PetrovićOSAOSV (pronounced[dʑôːrdʑepětrovitɕ]; Serbian: Ђорђе Петровић; 14 November [O.S. 3 November] 1768 – 25 July [O.S. 13 July] 1817), known by the sobriquetKarađorđe (pronounced[kâradʑoːrdʑe]; Serbian: Карађорђе, lit. 'Black George'), was a Serbian revolutionary leader who led a struggle against the Ottoman Empire during the First Serbian Uprising. Karađorđe Petrović held the title of Grand Vožd of Serbia from 14 February 1804 to 3 October 1813.
Born into an impoverished family in the Šumadija region of Ottoman Serbia, Karađorđe distinguished himself during the Austro-Turkish War of 1788–1791 as a member of the Serbian Free Corps, a militia of Habsburg and Ottoman Serbs, armed and trained by the Austrians. Fearing retribution following the Austrians' and Serb rebels' defeat in 1791, he and his family fled to the Austrian Empire, where they lived until 1794, when a general amnesty was declared. Karađorđe subsequently returned to Šumadija and became a livestock merchant. In 1796, the rogue governor of the Sanjak of Vidin, Osman Pazvantoğlu, invaded the Pashalik of Belgrade, and Karađorđe fought alongside the Ottomans to quash the incursion.