His Grace the Right Reverend Bishop Nicholas (Ziorov) of Warsaw was a 19th century bishop of the Church of Russia serving in Alaska and other parts of the Russian Empire. He was known as a leader who demanded prompt compliance with his instructions, yet was diplomatically careful. Bp. Nicholas successfully surrounded himself with able assistants, assistants who would be among the significant personalities in the growth of the North American mission. During his time as Bishop of the Aleutian Islands and Alaska the Orthodox presence in the United States grew from five to 17 parishes while he still cared for the community in Alaska.