Nicolas Rossolimo was a Russian-born chess player. After acquiring Greek citizenship in 1929, he was able to emigrate that year to France, and was many times chess champion of Paris. In 1952 he emigrated to the United States, and won the 1955 U.S. Open Chess Championship. He was awarded the title of International Grandmaster by FIDE in 1953. Rossolimo was a resident of New York City until his death. The Rossolimo Variation of the Sicilian Defence bears his name. From Wikipedia