This article discusses the work and performance of the bioethicist and feminist doctor Fátima Oliveira, who worked on behalf of the health of the black population based on her awareness of ancestrality. Thus, the text is built from a quick contextualization of the themes it addresses - such as bioethics and ancestrality - integrating these issues in Fátima Oliveira's performance as a doctor and leader of feminist movements. The Bioethics developed by Oliveira also assumes critical perspectives, especially in the face of issues related to the issue of women and the health of the black population. The article shows that ancestry is present in the life and work of Fátima, not so much because of a theorization of the theme, but because of the consciousness and identity that marked her work and pioneering spirit. This text does not exhaust the richness of the work of the studied author, but seeks to indicate some elements that can keep the memory of Fátima Oliveira as one of the outstanding feminist bioethicists in our country.