Question: Who is the mother-in-law of Johannetta Of Sayn-Wittgenstein (1632–1701)?
Sentence (from "John George I, Duke of Saxe-Eisenach"): Johann Georg I, Duke of Saxe-Eisenach (Weimar, 12 July 1634 – hunting accident, Eckhartshausen, Marksuhl, 19 September 1686).
Relevant evidence: No