Henri Hayden   (b Warsaw, 24 Dec 1883; d Paris, 12 May 1970). Polish painter, active in France. He began a course in engineering at Warsaw Polytechnic in 1902 but also enrolled as a student at the School of Fine Arts, and in 1905 he gave up engineering to devote himself entirely to painting. In 1907 he arrived in Paris, intending to stay for only a year, but lived in France until his death. He attended the Académie La Palette for several months and in 1909 visited Brittany, in particular Le Pouldu and Pont-Aven, where he went to work for a number of summers, and where he met and became friendly with the Polish painter Wladyslaw Slewinski, who had been a member of Paul Gauguin’s circle.