Heinrich Fürst zu Sayn-Wittgenstein (1879-1919) (1879–1919) Parents Theodor Friedrich Fürst zu Sayn-Wittgenstein-Berleburg Children Lev Genrikhovich Wittgenstein Darya Genrikhovna Wittgenstein Pyotr Genrikhovich Wittgenstein Fyodor Genrikhovich Wittgenstein Partners Yelizaveta Nabokova