From the point of view of cognitive semantics, the process of anthroponymic categorization – of the most important function of all human cognitive activity is considered. The vertical categorization of anthroponyms is substantiated, which is carried out at superordinate (supra-basic), basic and subordinate (sub-basic) levels. Identified conceptual and thematic areas «Philosopher», «Ruler», «Religion», «Kinship and property» in historical works «Tarihi muluki Azham» and «Tarihi anbiyo wa hukamo» Alisher Navoi, represented by proper names, testify to the ability of proper names as onomastic signs to go beyond the structure of language and reflect those extralinguistic facts, which significantly influence an adequate understanding of the text picture of the world and the views of the great author.