Question: What is the date of death of Prince Albert Of Schleswig-Holstein-Sonderburg-Glücksburg's mother?
Sentence (from "Princess Adelheid of Schaumburg-Lippe"): Through her marriage to Friedrich, Duke of Schleswig-Holstein-Sonderburg-Glücksburg, Adelheid was a sister-in-law of Christian IX of Denmark and Duchess consort of Schleswig-Holstein-Sonderburg-Glücksburg from 14 October 1878 to 27 November 1885.
Relevant evidence: No