Chancellor was a civil rank of the 1st class and equal to those of Active Privy Councillor, 1st class, General Field Marshal in the Army, and General Admiral in the Navy.
[1][2][3] The rank holder should be addressed as Your High Excellency (Russian: Ваше Высокопревосходительство, Vashe Vysokoprevoskhoditelstvo).
In the entire history of the Russian Empire, there were only 12 Chancellors, fewer than reigning monarchs.
As a general rule, except for the period of the Napoleonic Wars, there could be only one Chancellor at any given time.
For the last 35 years, since the death of Gorchakov, the Russian Empire still appointed no Chancellors.