Question: What is the date of death of Louis Vi, Landgrave Of Hesse-Darmstadt's mother?
Sentence (from "Sophia Eleonore of Saxony"): Sophia Eleonore of Saxony (23 November 1609 – 2 June 1671) was a duchess of Saxony by birth and the landgravine of Hesse-Darmstadt from 1627 to 1661 through her marriage to Landgrave George II.
Relevant evidence: Yes