Adelaida von Keller German aristocrat Parents Sofiya Borch Fyodor Keller Children Eleonora Plater-Zyberk Victor Gf. Plater-Syberg Teofil Stanisław Plater-Zyberk Siblings Artur Keller Eduard Keller Viktor Keller Partners Henryk Wacław Ksawery Plater-Zyberk