Question: When was Princess Eleonora Of Savoy's mother born?
Sentence (from "Polyxena of Hesse-Rotenburg"): Princess Polyxena of Hesse-Rheinfels-Rotenburg (Polyxena Christina Johanna; 21 September 1706 – 13 January 1735) was the second wife of Charles Emmanuel, Prince of Piedmont whom she married in 1724.
Relevant evidence: Yes