Wiki information Gumilevsky:

Filaret Gumilevsky

Archbishop Filaret was the Russian Orthodox Bishop of Riga, Archbishop of Kharkov, and Archbishop of Chernigov. The son of a priest from the district of Shatsk, Filaret is best known as a theologian and church historian. At the precocious age of 30...

Yevgeny Golubinsky

Yevgeny Yevsigneyevich Golubinsky was one of three major church historians of the Russian Empire, along with Macarius Bulgakov and Filaret Gumilevsky. He was considered the foremost authority on the Russian medieval saints. Golubinsky was the son of...