Maria Giuseppa Rossello (27 May 1811 – 7 December 1880) was an Italian religious sister who founded the Daughters of Our Lady of Mercy.
[4] In 1837 Rosello responded to Agostino De Mari and his appeal for volunteers in education and she worked with the poor and uneducated.
[5] De Mari provided a small house to Rossello and her coworkers and it resulted in - on 10 August 1837 - the foundation of the Conservatory of the Sisters of Mercy and Saint John the Baptist.
[5] Plagued with heart complications due to the strenuous work she undertook, Rossello died at the age of 69 on 7 December 1880.
This local process culminated on 19 March 1936 when Pope Pius XI recognized her life of heroic virtue and proclaimed her to be Venerable.