ENViachaslau Adamovich "Dziarhach" and Viachaslau Razumovich "Khmara" are very ambiguous personae in the history of the Belarusian national movement in 1918–21. Many facts in their biographies are still obscure. One of these is the attempt at establishing cooperation with the Latvians, which took place in the territory of the Free City of Danzig. Documents of the Latvian diplomatic service shed new light on the activities of the atamans "Dziarhach" and "Khmara" in the 1920s.