Question: Who is the maternal grandmother of William August, Duke Of Saxe-Eisenach?
Sentence (from "Marie Elisabeth of Brunswick-Wolfenbüttel"): Rudolph Augustus, Sibylle Ursula (by marriage Duchess of Holstein-Glücksburg), Clara Augusta (by marriage Duchess of Württemberg-Neustadt) and Anthony Ulrich, all born from Augustus' second marriage with Dorothea of Anhalt-Zerbst.
Relevant evidence: No