The nationality of the residents of the country of Lithuania Minor is best shown by the sources from the fourth decade of the 18th century. In the process of the colonization of Lithuania Minor the order to check the circumstance of the state peasants was issued. The data showed the distribution by nationalities and the number of state peasants in the Lithuanian Province. The data was used by M. Beheim-Svarbach, who published the tabulations of the territorial distribution of Lithuanian and German villeins (having their farm) in all the villages and districts of Lithuanian Province. The data from the lists of colonists, which shown their descent, was published by G. Geking, G. Schmoler, A. Skalveit in their researches.