This research aims to reflect on the effects of ethnocide in relation to indigenous presence in urban and peripheral areas, based on a case study linked tomy own life and the social experience of my grandmother, Dona Dora, a Potyguara remnant and migrant from Paraíba. We dialogue with studies on the phenomena of ethnogenesis and identity recovery, which are confronted with the miscegenation process and ethnic-racial violence that took place together with the colonial fact. In the methodology used we explore the (auto)ethnographic model and honor the attentive listening of ancestral orality through grandma and her life story. In the field of social sciences we are interested in understanding the problems that permeate the subordination of Afro-indigenous people in the formation of national society. For Gayatri Chakravorty Spivak, the subaltern subject is conceived as absent in the discursive practices of political and social representation, here we break with this and contribute to the production of Afro- indigenous knowledge, from reflections on life, ancestry, and memory.