Question: How is the name of this princess, who has a brother named Semyon Vorontsov, and who was a  major figure of the Russian Enlightenment, often spelled in English?
Sentence (from "Tl'azt'en Nation"): Tl'azt'en Nation is a First Nations band located along the north shore of Stuart Lake near the outlet of the Tache River, in the northern interior of British Columbia.
Relevant evidence: No