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About us Cockayne is a private foundation based in San Francisco with a special interest in supporting the arts in London. It is one of the successor foundations of Columbia Foundation a groundbreaking philanthropic foundation founded along enlightened principles in 1940 by Madeleine Haas Russell mother of the current President of Cockayne and Madeleines brother William Haas httpwww. columbia. org True to Madeleine Haas Russells belief that young people can best discern the priorities of their time in 2013 Columbia Foundations assets were divided between three successor family foundations designed to involve the next generations in giving.