Clinton Ives Smullyan

Clinton Ives Smullyan passed away on October 23, 2025, at the age of 75. Born in New York City on March 18, 1950, Clint was a graduate of the Buckley School in New York, the Millbrook School and Brown University. Soon after graduating, he founded Mosbacher Properties Group, and over more than a half century built a leading real estate development and investment firm with properties around the country. Clint held a lifelong and special interest in world affairs, guided by a deep belief in the power of knowledge and open societies. A generous philanthropist, he dedicated much of his life to supporting efforts that strengthened democracy and countered Russian disinformation. He was a founding Board member of the Jamestown Foundation in Washington, D.C., which conducts global research and analysis. Clint’s keen understanding of Kremlin internal politics—shaped by his own study and personal interactions with Soviet defectors—helped ensure that timely and insightful information reached U.S. policymakers. A notable example was his support for the Soviet diplomat Arkady Shevchenko, whose memoir became a bestseller at the height of the Cold War. He also served on the Board of the Saratoga Foundation, in Washington, D.C., established to educate U.S. policymakers about the strategic importance of the war in Ukraine and the broader ambitions of Russia and China in Eurasia. Through his passionate support for organizations promoting fact-based analysis - free of opinion - Clint made enduring contributions to the advancement of truth, democratic governance, and informed foreign policy by directing that flow of information directly into the hands of American policymakers and the US policy community. Over many decades, Clint collected rare books, indulging his love of language with distinguished collections of early English lexicography and the works of Ernest Hemingway and Graham Greene, among others. His love of books and his wisdom about their value for humanity were hallmarks of his longtime service as an irreplaceable board member for the John Carter Brown Library at Brown University, where the digitalization laboratory is named for him, and which awarded him the JCB Library Medal. He served as well on the Research Libraries Board of the New York Public Library and the Council of Fellows of The Morgan Library and the Grolier Club. Among his other involvements was service on the boards of Lenox Hill Neighborhood Association and the Chamber Music Society of Lincoln Center and PEN America. Clint was the beloved husband of Catherine (Katie) Kinsey, father of Alexander and Nicholas Kinsey, father-in-law of Amanda Kinsey, grandfather of Conor, Adelaide, and Loretta (Zuzu) Kinsey, and brother and brother-in-law of Bennett Smullyan and Rayna Upton-Haigh and many nieces and nephews and cousins. Clint was also the beloved godfather of Stephanie de Wangen, Julia Garrelfs, Dr. Sophie Hofferberth and Lindsay van Melle Kamp. Clint’s clever sense of humor, generosity, and loyalty endeared him to a legion of friends and colleagues, and all who knew Clint will forever have indelible memories of him. Deepest appreciation to Clint’s selfless aides, Rabindra Sooklall and Tsering Wangyal and to Clint’s wonderful physicians-Dr. Gerard Hellman, Dr. Kate Stoeckle, Dr. Scott David, Dr. John Lantis and Dr. David Majure.