Zelia Trebelli-Bettini

Zelia Trebelli (1836–1892) also known as Zelia Gilbert or by her stage name Trebelli, was a French operatic mezzo-soprano. Born Zélie Thérèse Caroline Gillebert in Paris, she died in Etretat. Mme Trebelli's artistry was greatly admired by George Bernard Shaw, who wrote about her a number of times in his various reviews. In particular, he admired her interpretations and her exemplary English diction, rare for a non-native English speaker.