Igor Cassini was born Igor Aleksandrovich Loiewski on September 15, 1915, in Russia. Igor Cassini and his elder brother, Oleg Cassini, were the sons of Russian diplomat Alexander Loiewski and his wife, Countess Marguerite Cassini, a Russian-Italian aristocrat. His maternal grandfather, Arthur Paul Nicholas, Marquis de Capuzzuchi di Bologna, Count ...
Survived by his brother, Oleg Cassini and his four children, Marina, Alexander, Nicholas and Dimitri; a stepchild, Dana Wrightsman Dantine (son of Helmut Dantine; four grandchildren; and two great-grandchildren.
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Two sons with Brenda Mitchell: Nicholas and Dimitri.
Eminent society gossip columnist for the Hearst newspapers in the U.S. during the 1940s and 1950s, using as his byline that quintessentially New-York pseudonym, Cholly Knickerbocker. (The wholly fictional "Father Knickerbocker" is to New York as the equally fictional "Uncle Sam" is to the U.S. There was also a a New York brew called Knickerbocker Beer, and there remains today in New York a professional basketball team, the Knickerbockers.)
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Said to have coined the term 'Jet Set' to describe the rich practitioners of aimless, globe-hopping travel.