This study seeks to reconstruct the form of the refl ective particle in the Protocreole of the Gulf of Guinea (PGG) based on data from its daughter languages Santome (ST), Angolar (AN), Lung’Ie (LI), and Fa d’Ambô (FA). Thus, the refl exive mechanisms of the daughter languages were compared by identifying convergent and divergent features. Then, the reconstruction of the refl exive particle of the PGG was based on the application of the comparative method of historical linguistics. The reconstructed form *ôg͡bê > ubwê (ST), ig͡bê (LI), ôngê (AN), ôgê (FA) is an evidence for the relationship between the four daughter languages. Furthermore, the reconstruction of categories such as refl exive particles corroborates the fact that features from languages of the Niger Delta are not limited to phonology but are present in diff erent layers of the proto-language. Therefore, the protoform *ôg͡bê function as a refl exive particle and can refer to lexical item ‘body’ too