María Isabel Chicha Chorobik de Mariani ((1923-11-19)November 19, 1923 – (2018-08-20)August 20, 2018), was an Argentine human rights activist.

After the coup d'état of March 24, 1976, the mothers whom their grandchildren were kidnapped and missing founded a human rights organization with the goal of finding the children stolen and illegally adopted during the Argentine dictatorship.

the others Diana Teruggi, Roberto Porfidio, Daniel Mendiburu Eliçabe, Juan Carlos Peiris and Alberto Bossio, Clara Anahí Mariani, all were taken alive and kidnapped that day.

[5] The day of the attack Daniel Mariani had left house for the work in Buenos Aires, For about eight months he fought for the organization Montoneros clandestinity.

On December 24, 2015, a lady called cordovan arrived at the house of the founder of the Grandmothers of the Plaza de Mayo, affirming that she was Clara Anahí Mariani-Teruggi, the disappeared granddaughter of Chicha Mariani.

As evidence, a report from the CIGA (Integral Center for Applied Genetics), a private laboratory in the city of Córdoba, signed by a biochemist named Juan Carlos Jaime, affirmed "the existence of a biological link through the paternal route with a probability of 99.9%.

[6][7] Chorobik de Mariani testified in a trial against former commissioner Miguel Etchecolatz responsible for crimes against humanity committed during the military dictatorship.