Pobuzhdenіem to this essay was the fact that in the istorіcheskoy of Russian literature, not only the spetsіalnago of the treatise on Simeon Bekbulatovich, but also in the existing short-lived and deaf-mouthed mistakes, inaccuracies and inaccuracies that occurred vsldstvіe otozhestvlenіya two different historical persons. These persons - Ediger-Makhmet, the tsar Kazansk_y, pljnenny Ivanom of IV Groznym at vzyat_ of Kazan (1552), krestivsh_ysya potom v Moskv (v February, 1563) and prinyavsh_y a name of Simeon, and Sain-Bulat, tsarevich Astrakhansk_y, also krestivsh_ysya and poluchivsh_y too a name. This external similarity of the two Simeons was so striking that what belonged to the other was transferred to one face, even more so that both of them were almost contemporaries.