Painter, writer and curator, born in London, where he died. After studying at Alleyn’s School Manson did clerical work, in 1896 beginning to study painting part-time at Heatherley’s School of Fine Art, then Lambeth School of Art. In 1903 he married the violinist Lilian Laugher and together they went to Paris where he studied at Académie Julian, returning in 1904, where Manson set up as a professional painter. In the few years before World War I Manson met Lucien Pissarro, whose work he championed and who influenced his own Impressionistic style; became secretary of the Camden Town Group and acted as its secretary; joined the Tate Gallery as an assistant; and was made secretary of LG. In 1919 with Pissarro he formed the short-lived Monarro Group, inspired by the work of Claude Monet and Camille Pissarro, Lucien’s father.