Isabel Chorobik was born on 19 November 1923 in San Rafael, Mendoza, Argentina. She was married to Enrique José Mariani. She died on 20 August 2018 in La Plata, Buenos Aires, Argentina.
Cofounder, with Alicia Zubasnabar de la Cuadra, of the 'Abuelas de Plaza de Mayo who struggled to get answers about the disappearance of their loved ones during Argentina's Dirty War of 1976 to 1983.