Question: Who is the paternal grandfather of Henry Iii, Landgrave Of Upper Hesse?
Sentence (from "Louis I, Landgrave of Hesse"): Louis I of Hesse  (6 February 1402, Spangenberg - 17 January 1458), called "the Peaceful" was Landgrave of Lower Hesse (Hesse) from 1413-1458.
Relevant evidence: No