Question: Who is the maternal grandmother of Anna Tyszkiewicz?
Sentence (from "Anna Tyszkiewicz"): Anna was the daughter of Ludwik Tyszkiewicz and Konstancja Poniatowska, and married Aleksander Stanisław Potocki on 15 May 1805 in Wilno, divorced him in 1821 and remarried Stanisław Dunin-Wąsowicz.
Relevant evidence: Yes