Право первой ночи - очередная выдумка и грязная марксистская антиаристократическая инсинуация.

Sexuality in medieval Europe (1996) by Ruth Mazo Karras
доступно на google books, 3я глава самый конец

"The husband, and no one else, had legal rights to sex with wife. <...> This myth still appears, <...> even though historians have demonstrated repeatedly <...> that such a custom did not exist. <...> This is presented as a loacl custom, not a universal usage, and it resembles many other such local customs not including the right of the first night but including other forms of sexual mockery. No doubt many peasant women were raped or coerced by their lords, and there was not a great deal that they or the men in their families could do about it. But this offense was not institutionalized. It was never an official or customary right of the lord."