Abstract: This research is conducted within the framework of linguistic source studies, the theoretical basis of which was formed as part of the Sector of Linguistic Source Studies and Research of the Monuments of the Russian Language of V. V. Vinogradov Institute of the Russian Language. The object of this article is the genres of customs record management, which are rarely involved in historical and linguistic research. The subject of this article is the expense books of Yeniseian Siberia stored in the Russian State Archive of Ancient Documents. Its brief overview is intended to draw attention of the scholars to high linguistic capacity of these manuscripts. The relevance of the selected topic is substantiated by the need to solve one of the key tasks of linguistic source studies – introduction of new sources with high linguistic capacity into the scientific discourse. The application of paleographic, historiographical, formulary analysis, and historical-lexicological analysis establish the affiliation of these manuscripts to the local scribes; determine their structure and form of texts of the expense books; reveal most common lexical-semantic groups and individual lexemes that were not recorded in other customs materials. The specificity of expense books allow using them as a reliable onomastic source that reflects not only the all-Russian, but also local processes of formation of the Russian anthroponymycon. The introduction of the regional expense books with high linguistic capacity into the scientific discourse broadens the representation on the Old Russian language, provides reliable information on the lexis and onomastic system on the periphery of the Moscow State.

Abstract: The object of this research is the anthroponymycon of the regional artifacts of business writing style of the second half of the XVII century. The subject is the model of nomination of persons belonging to the peasant class that played a significant role in the formation of permanent population of this territory. The article employs the unpublished manuscripts of business content, preserved in the Russian  State Archive of Ancient Acts (Moscow). Application of the traditional onomastics research methods alongside modeling techniques, the author conducts the analysis of structural peculiarities of anthroponymyc models of nomination of peasants; determines the place and role of additional identifiers of a person (names of persons by the degree of kinship, profession, and initial place of residence). The acquired results demonstrate that the absence of the single legal norm in documental writing style led to variations in the use of anthroponymyc structures for nomination of the same person, and the use of additional identifiers –  to creation of the more complex descriptive structures. It is established that the last component for nomination of a person in any model could include bynames and family names of peremptory origin, passed from father to son, which reflects the initial stage of the formation of last names on the periphery of the Moscow State. The scientific novelty consists in introduction into the scientific discourse of unpublished sources and anthroponymyc records into, which allows broadening the knowledge on the composition of the socially limited regional anthroponymycon of the XVII century.