Born Jeanne Clémence Floriet in Paris,[3] Margyl made her debut as a mime artist at the Folies Bergère[4] on 10 February 1897, creating the title role in Phryné, a ballet-pantomime by Auguste Germain, with music by Louis Ganne.

[7][8] In September 1898, she took part there in L'Enlèvement des Sabines, a ballet-pantomime by Adrien Vély and Charles Dutreil, with music by Paul Marcelles, with Odette Valery, J. Litini and J.

She resumed her voice studies, and in December 1903, Alexandre Luigini called her to replace Lina Pacary in the title role of Massenet's Hérodiade at the Théâtre de la Gaîté.

[14][19] She died in Deauville from appendicitis at the age of 33,[20] while she was preparing for the roles of Fidès in Meyerbeer's Le prophète, Ann Boleyn in Henry VIII and Ortrud in Wagner's Lohengrin.

[14] She was buried in Paris at the Batignolles Cemetery (1st division), where a statue by François-Léon Sicard memorializes her, seated and dying, with Euterpe, the classical muse of music, hiding her lyre and her face.