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Iain Macnab (1890-1967) was the founder of the Grosvenor School of Modern Art which he set up at his house in 33 Warwick Square, Pimlico, London with Claude Flight (1881-1955); among his students were Sybil Andrews, Cyril Power, Lill Tschudi and William Greengrass who are now known for their linocuts.