Hélène Sophie Emilie Rosen, known as Jelka, (30 December 186828 May 1935) was a German painter, best known as the wife of the English composer Frederick Delius. She was born in Belgrade in 1868. She was the youngest of five children born to Georg Rosen (1820−1891) and his wife Serena Anna Moscheles (1830−1902), also a painter, and daughter of the composer Ignaz Moscheles. Jelka Rosen studied art from 1892 at the private Académie Colarossi in Paris, accompanied by her newly widowed mother. Living in Montparnasse, she made the acquaintance of the composers Gabriel Fauré, Maurice Ravel and Florent Schmitt and artists Auguste Rodin, Camille Claudel, Paul Gauguin, Henri Rousseau, Edvard Munch and Ida Gerhardi. She exhibited at the Salon des Indépendants. She met Frederick Delius at a dinner party on 16 January 1896, and found they had a shared interest in the writings of Friedrich Nietzsche and the music of Edvard Grieg. In 1897 Delius returned from business in Florida, where he had managed an orange plantation twelve years previously; he moved into her newly-acquired house in Grez-sur-Loing, a house owned by her and her mother, and they married in September 1903. She was heiress to a modest fortune from her distinguished Schleswig-Holstein family and her wealth gave Delius financial security. Through her parental heritage, Jelka was widely read and spoke a number of languages, and it was she who often suggested texts her husband could set to music. She identified the works of Ernest Dowson for his Songs of Sunset, and Walt Whitman for Songs of Farewell. Her German translations of these texts were often published along with the music. Her artistic skills were also invaluable in sketching designs for the scenery in Beecham's 1920 revival of A Village Romeo and Juliet. Her own artwork appeared on the vocal score to Fennimore and Gerda. She remained devoted to Delius despite his affairs with other women. In the last twelve years of Delius's life, after he became blind and paralysed with third-stage syphilis, she gave up her work to be his caregiver. She herself became ill with bowel cancer, and made it known that outside help would be welcome. This led to Eric Fenby offering his services to the composer as an amanuensis, but he often served as Delius's personal nurse. Fenby worked with Delius for six years, during which time Jelka had intermittent absences for medical treatment. She returned