De Belocca was born in
St. Petersburg, where her father was an Imperial Russian Councilor of State. After studying in St. Petersburg with
Henriette Nissen-Saloman and in Paris with Nicolas Lablache and Maurice Strakosch, she made her stage debut in Paris at the
Théâtre Italien as Rosina in
The Barber of Seville. She also appeared there in the title role of
La Cenerentola and as Arsace in
Semiramide. She appeared in various cities in Europe, including London, where she made her debut with opera manager
James Henry Mapleson's company. She then became a member of the Strakosch Opera Company, with whom she made her American debut on 17 April 1876 as Rosina at New York's
Academy of Music. She also appeared in concerts in Boston, Chicago, Philadelphia and San Francisco. With the Mapleson company, she continued to sing leading roles in New York and Philadelphia through the 1880s. ==References==