Given a reference text about Anne Elizabeth Howells, tell me the names' of her parents and how she died.

Context: Anne Elizabeth Howells was a British operatic mezzo-soprano.

Biography
Howells was born in Southport, Lancashire on 12 January 1941, the daughter of Trevor Howells and Mona Howells. She was educated at Sale Grammar School, where her teachers included Alfred Higson. She further studied music at the Royal Manchester College of Music, where her teachers included Frederic Cox. Howells continued singing studies with Vera Rózsa.

Howells sang in productions at Glyndebourne, the Royal Opera House, and with the Metropolitan Opera in New York, the Lyric Opera of Chicago, the opera houses of both San Francisco and Los Angeles, the four Parisian opera houses, the Grand Théâtre de Genève, the Salzburger Festspiele, the Vienna Staatsoper, the Carnegie Hall, and the Musikverein of Vienna. She sang in the premieres of Rolf Liebermann's Forêt, Nicholas Maw's The Rising of the Moon and of Richard Rodney Bennett's Victory. Following her retirement from public performance, Howells taught at the Royal Academy of Music.

Answer: Anne Elizabeth Howells parents are Trevor and Mona Howells. She died from myeloma.