Clara Novello Davies died in 1943.
Clara Novello Davies was born in 1861.
Clara Novello was born in 1818.
Ivor Novello's birth name is Davies, David Ivor.
Clara Cannucciari died on November 29, 2013, in Skaneateles, New York, USA.
Giuseppe Novello died in 1988.
Marie Novello died in 1928.
Malatesta Novello died in 1456.
Vincent Novello died in 1861.
Agostino Novello died on 1309-05-19.
Adriano Alpago Novello died in 2005.
Ivor Novello died on March 6, 1951 at the age of 58.
Antonia Coello Novello (b. 1944) was Surgeon General of the U.S. 1990-1993, the first woman and also first Hispanic to hold that position. No opera singers by that name that I can find, but maybe you are thinking of Clara Novello (1818-1908)? (Coello=Clara?) She was the daughter of the London music publishing magnate Vincent Novello, and sang in premieres of sacred works by Mendelssohn and Rossini; considered one of the three best English sopranos of her day.