Forms of address in the Russian Empire aer no longer used, but used to be codified and determined by a person's title, military rank, civil rank, or position in the clergy; and bureaucratic styles ranged from Your High Excellency to Your Well Born.
All of these styles are now obsolete and are only used in historical context. From the time of Peter the Great, forms of address in the Russian Empire had been well-codified, determined by a person's title of honor, as well as military or civil rank (see Table of Ranks) and ecclesiastical order. Your High Excellency Bureaucratic styles Your Well Born 
