Question: What is the date of death of Hermann Ii, Landgrave Of Thuringia's mother?
Sentence (from "Hermann II, Landgrave of Thuringia"): Hermann II (28 March 1222 in Creuzburg – 3 January 1241) was the Landgrave of Thuringia and the son of Louis IV, Landgrave of Thuringia, and Saint Elizabeth of Hungary.
Relevant evidence: Yes