Question: Who is Louis Ix, Landgrave Of Hesse-Darmstadt's paternal grandmother?
Sentence (from "Louis VIII, Landgrave of Hesse-Darmstadt"): Louis VIII (German: "Ludwig") (5 April 1691 – 17 October 1768) was the Landgrave of Hesse-Darmstadt from 1739 to 1768.
Relevant evidence: No