The Golitsyns were in fact not descendants of Riurik, the mythic founder of the first Russian state, but of Gedymin, a fourteenth century grand prince of Lithuania

He aid they knew all about Sergei, that he was a strident monarchist and fascist, and he called him "Prince Riurik, a class enemy, a foe of Soviet power." (Here Sergei, unwisely, pointed out that the Golitsyns were in fact not descendants of Riurik, the mythic founder of the first Russian state, but of Gedymin, a fourteenth century grand prince of Lithuania. The stunned interrogator found this elucidation neither helpful or to the point.)

D. Smith,  Former People (2012), 288