The name of the current spiritual head of the Moscow Patriarchate is His Holiness Patriarch Kyril.
The current leader of the Russian Orthodox Church is Patriarch Kirill I of Moscow.
Yes, the main religion in Russia is Christianity, with the majority of followers identifying as Russian Orthodox.
A patriarch is the just a Bishop who was selected by his brothers in Christ to be the leader of the Church . The first among the equals.
The leader of the Russian Orthodox Church is currently Patriarch Kirill I of Moscow.
A Byzantine Patriarch is an alternative name for the Ecumenical Patriarch of Constantinople.
An Exarchate in any Orthodox Church is the area of jurisdiction of an Exarch. An Exarch is a cleric who has been appointed by his Patriarch to represent the Patriarch in another country or area. For example, the Russian Patriarch may appoint an Exarch in Jerusalem, and then Jerusalem becomes part of the Exarchate of the Moscow Patriarchate. The Exarch then acts as the Patriarch's representative in that area (called the Exarchate).
In genealogy the patriarch is the another name for the father.
Patriarch Alexiy II's birth name is Aleksei Mikhailovich Ridiger.
St. Petersburg
Pope
he eliminated the position of the patriarch of the Russian orthodox church