The article for the first time examines the “Jewish presence” in a unique diplomatic victory of the Kokand Khanate – a peace treaty with China concerning East Turkestan in the end of the first third of the nineteenth century. The author found it necessary to dwell on the events that led to its signing. Comparing the data of the Central Asian and Chinese informants the author makes an attempt to identify an unnamed hero of the peace treaty as pertaining to the persons connected to this treaty and named in these sources. The article reviews the established dates of the beginning of the Jewish presence in the Tashkent-Kokand Region. According to the author, the Jewish presence began at least for a few decades earlier than the accepted date of the mid-nineteenth century implies, i.e. in the first third of the century.