Australian operatic vocalist (soprano). Née Helen Porter Mitchell. Born 19 May 1861, Melbourne, VIC, Australia. Daughter of David Mitchell (builder) and Isabella Ann Dow. Married Charles Nesbitt Frederick Armstrong, 22 December 1882, Brisbane, QLD, Australia (div.). Died 23 February 1931, Sydney, NSW, Australia.
Australia's most famous opera singer, studied under Pietro Cecchi and Mathilde Marchesi. Created a DBE in 1918 for 'services in organising patriotic work'.