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 "Catherine Vorontsov"): Countess Ekaterina Semyonovna Vorontsov (October 24, 1784 in Saint Petersburg – March 27, 1856 in London), sometimes spelled Woronzow, was the daughter of Semyon Vorontsov, the Russian ambassador in Britain from 1785, and the only sister of Prince Mikhail Vorontsov, Viceroy of New Russia and Caucasus (1782–1856).
Relevant evidence: No