Irving Kahn
Irving Kahn was an American businessman and investor. He was the oldest living active investment professional. He was an early disciple of Benjamin Graham, the creator of the value investing methodology. Kahn began his career in 1928 and continued to work until his death. He was Chairman of Kahn Brothers Group, Inc., the privately owned investment advisory and brokerdealer firm that he founded with his sons, Thomas and Alan, in 1978. Until his death, Kahn performed an active role at the company, though Thomas, who is the firms president, ran and continues to run the business and was and is still responsible for the firms investment decisions.
Kahn was born on December 19, 1905 in New York City to Mamie and Saul Henry Kahn . Educated at the City College of New York, Kahn served as the second teaching assistant to Benjamin Graham at Columbia Business School. At the time, other notable students andor teaching assistants to Graham included future Berkshire Hathaway chairman Warren Buffett and future value investors William J. Ruane, Walter J. Schloss, and Charles Brandes, among others. Graham had such an enormous influence on his students that both Kahn and Buffett named their sons after him. Kahn named his third son, born in 1942, Thomas Graham, and Buffett, his first son, born in 1954, Howard Graham.
Source: Wikipedia