The paper presents some tribal proper names of a part of aboriginal population of historical Dauriya of the 18th–the 19th centuries: Vakharoy and Scharaid. The linguistic analysis of these proper names enables us to make a certain conclusion not only about the common ethnic origin, but also about the probable presence of a Turk ethnic element both among the Buryat tribes and the aboriginal part of Russian old inhabitants of the so called ‘Tungus’ ethnic origin in Transbaikalia. A pypological analysis of the systems of pagan proper names of the Tungus population reveals their lexical identity. This fact can be useful for the future scientific investigations on the corpus of historical proper names – ethno- and anthroponyms of East Transbaikalia.