'' Her talent for singing was discovered by actress Johanne Juell and Oselio began to study singing in her native country with
Fritz Arlberg beginning when she was 17, and with
Fredrika Stenhammar in Sweden from 1877. She made her professional opera debut on 11 December 1879 as Leonora in
Gaetano Donizetti's
La favorite at the
Royal Swedish Opera. The next year, she impressed
Oscar II of Sweden and Norway with her performance of Ortrud in
Wagner's
Lohengrin so much that he sponsored her studies in Paris with
Mathilde Marchesi, as well as bestowing the title of "hofsangerinde" on her, becoming the only Norwegian person to hold the title. After her education finished in Paris, she performed in several guest roles at Italian opera houses as well as touring all across Italy and other European countries. It was in that she began using the stage name Gina Oselio. Oselio was played Margrethe in
Charles Gounod's
Faust in 1890 and the as the titular role in
Carmen both at the
Christiania Theatre and they were two of her favourite roles. However, Oselio regularly suffered from
bronchitis during the 1890s and a major abdominal surgery in 1903 limited her stage performances. == Later life and death ==