Question: What is the date of death of August, Duke Of Saxe-Merseburg-Zörbig's mother?
Sentence (from "August, Duke of Saxe-Merseburg-Zörbig"): He was the third but second surviving son of Christian I, Duke of Saxe-Merseburg and Christiana of Schleswig-Holstein-Sonderburg-Glücksburg.
Relevant evidence: Yes