Question: Who is Margaret Of Hanau (1452-1467)'s maternal grandmother?
Sentence (from "Countess Palatine Margaret of Mosbach"): Countess Palatine Margaret of Mosbach (2 March 1432 – 14 September 1457) was the eldest daughter of Count Palatine Otto I of Mosbach and his wife, Johanna of Bavaria-Landshut.
Relevant evidence: Yes