The House of the Romanovs is considered to be a social, culture, political phenomenon of Russian society. Dynasty marriage, on the one hand, is a political tool of Russia-Europe coexistence. On the other hand, it appears to be a special platform for a cross cultural dialog. The article reveals main indicators of positive sociocultural adaptation of German Princesses (Russian Impresses): Russian language competence — Orthodox mentality — self-understanding of high status — social and political activity — people surrounding — Russian self-identification. Two first steps are taken into consideration in details for their basic function in performing Russian self-identification. Also the article focuses on features of motivation and mentality orientation: the reach motif seems to be the most important. It overtakes the stimulus of recognition, stability, in prestige, in belonging to a family/society, cognitive, in self-competence.