Emilie da Fonseca, married surnames Muller and Bratz (31 December 1803 – 8 May 1884[1]) was a Norwegian-Danish stage actress and opera singer of Portuguese descent.
She was the daughter of Portugal-born[2] Abraham da Fonseca (1776–1849) and Marie Sofie Kiærskou (1784–1863).
She and her sister Ida Henriette da Fonseca (1802–1858) were students of Giuseppe Siboni (1780–1839), choir master of the Royal Danish Theatre Opera in Copenhagen.
She debuted in October 1827 as Susanna in The Marriage of Figaro at the Copenhagen Opera, and was given a position there alongside her sister the same year.
[5] She first married in 1839 to music teacher Ludvig Ernst Müller who died ca.