Question: Which country Olga Potocka's father is from?
Sentence (from "Stanisław Szczęsny Potocki"): Count Stanisław Szczęsny Feliks Potocki (1751–1805), of the Piława coat of arms, known as Szczęsny Potocki
was a member of the Polish szlachta and a military commander of the forces of the Polish–Lithuanian Commonwealth and then Poland.
Relevant evidence: Yes