Cecile Walton was the daughter of the artist E.A. Walton, one of the Glasgow Boys. Born at Glasgow, Cecile studied in Edinburgh, Paris and Florence and was influenced by the pre-Raphaelites and by the symbolist painter, John Duncan. At this time Cecile also met fellow symbolist painter and member of the Edinburgh Group, Eric Robertson. Despite her parents' opposition (they disapproved of his unconventional lifestyle), she married him in 1914. The years of Cecile's marriage to Robertson, during which time she exhibited with the Edinburgh Group, were the most successful of her career. She published water-colour illustrations of Polish fairy tales and produced several major works in oil, Romance (now in the collection of the National Galleries of Scotland) being the most notable.
By 1923, however, she and Robertson had gone their separate ways. Cecile produced little work thereafter. It was not until the late 1940s, after moving to Kirkcudbright, that she began painting and illustrating again, although never regaining the reputation of earlier years. She died in Edinburgh.