Question: Who is Countess Marie-Jenke Keglevich Of Buzin's mother-in-law?
Sentence (from "Henriette Mendel"): Henriette Mendel, Baroness von Wallersee( July 31, 1833 – November 12, 1891) was a German actress, and the mistress and, later, morganatic wife of Ludwig Wilhelm, Duke in Bavaria.
Relevant evidence: No