March 14 , 1984

Gustav Holst (September 21, 1874 to May 25, 1934) had one child, a daughter, Imogen. They were very close and she inherited musical talent as well as his weakness of the arm which in each case affected their careers. Imogen Holst (April 12, 1907, to March 9, 1984) tended her father's reputation and lived successfully on the outskirts of musical artistry. 

"She supervised and conducted recordings; with the aid of the composer Colin Matthews she prepared and revised scholarly editions of her father's works." This detail is from the Oxford Dictionary of National Biography's article on her. There we also read that: "She served on the Bloomsbury House Refugee Committee, working for musicians from Austria and Germany," before the war, and then, during the second World War she was responsible for organizing music in southwest England to keep up the spirits of the citizens. 

She wrote books about musicians. Her book Britten (1966) quotes some of Christopher Smart's lines about his cat Jeoffrey. In 1975 she was awarded a CBE. She worked with Benjamin Britten and lived happily near him on the Suffolk coast. There she was buried on March 14, 1984.