In this article, we continue to address the mechanisms of presenting oneself as another and another as oneself. In this regard, non-trivial features of the semantics of a proper name are described. Based on the analysis of contexts of inappropriate use of a name in a situation of imposture, described in Pushkin's tragedy Boris Godunov, the author considers semiotic mechanisms of transformation and assignment of identity. The article shows that Pushkin's intuition allowed him to see the problems that arose in the analytical philosophy of the name of the second half of the 20th century. Pushkin consistently creates contexts in which the con­ditions of acceptability or unacceptability of deviating uses are tested. On the one hand, these features allow the author to offer an additional, logical and semantic dimension for the inter­pretation of the tragedy Boris Godunov. On the other hand, they significantly clarify the ex­isting theories of the proper name, showing their possible non-trivial, and in some cases, prob­lematic consequences. Simultaneously, the logical-semantic analysis makes it possible to iden­tify the mechanisms of imposture and the communicative conditions for its success.