 Emanuel Giani Ruset has various functions including Mare Spatar ("Minister of Defense", 1757) and Mare Postelnic ("Minister of the Interior and Justice") of Moldavia (1760).He became Prince of Wallachia from May 1770 to October 1771 during the Russian military administration of the country linked to the Russo-Turkish War of 1768-1774.He was then named Prince of Moldavia in May 1788 after the deposition of Alexander Ypsilántis.