High Quality Content by WIKIPEDIA articles! Prince Valerian Grigoryevich Madatov (1782 September 4, 1829) was an Armenian prince and a lieutenant-general of the Russian Empire.Madatov was born Rostom Madatyan in 1782 in Avetaranots, a village of the historical Varanda county of Nagorno-Karabakh, in a minor Armenian noble family as a melik (prince). At the age of 15 he left Karabakh for St. Petersburg with senior nobleman to seek support from Catherine the Great in their efforts to abolish Muslim control of the region.