Martinuzzi was born in Labin to Antonia Luis and Giovanni Pietro Martinuzzi (mayor of Labin); she was the eldest of three children.[4] She qualified as a teacher in 1875.[5]
She lived a long time in Trieste, where she taught in the poor neighbourhoods of the city,[6] helping with the integration of the Slovenians and fighting against narrow nationalistic municipalism. In 1904 she was elected to Trieste municipal council.[7]
She joined the Communist Party of Italy in 1921 and soon founded, and became the political secretary of, the Women's Communist Group of Trieste.[6][8] She was a leading light in the Women's Socialist Circle and wrote numerous political tracts for the emancipation of women.[2] In her last prose work, Fra italiani e slavi, she expresses her ideal of pacifism and ethnic integration.[2]
^Pizzi, Katia (2002). A City in Search of an Author. A&C Black. pp. 154–157.
^ abcCamboni, Marina (2004). Networking Women: Subjects, Places, Links Europe-America : Towards a Re-writing of Cultural History, 1890–1939: Proceedings of the International Conference, Macerata, March 25–27, 2002. Ed. di Storia e Letteratura. pp. 149–151.
^de Vries, Boudien (2016). Civil Society, Associations and Urban Places: Class, Nation and Culture in Nineteenth-Century Europe. Routledge. p. 97.
