 Grainger made further trips to Europe in 1925 and 1927 , collecting more Danish folk music with the aid of the octogenarian ethnologist Evald Tang Kristensen ; this work formed the basis of the Suite on Danish Folksongs of 1928 – 30 . He also visited Australia and New Zealand , in 1924 and again in 1926 . In November 1926 , while returning to America , he met Ella Ström , a Swedish @-@ born artist with whom he developed a close friendship . On arrival in America the pair separated , but were reunited in England the following autumn after Grainger 's final folksong expedition to Denmark . In October 1927 the couple agreed to marry . Ella had a daughter , Elsie , who had been born out of wedlock in 1909 . Grainger always acknowledged her as a family member , and developed a warm personal relationship with her . 
