Question: When was Princess Friederike Of Schleswig-Holstein-Sonderburg-Glücksburg's husband born?
Sentence (from "Princess Friederike of Schleswig-Holstein-Sonderburg-Glücksburg"): Friederike became the Duchess of Anhalt-Bernburg upon her marriage to Alexander Karl, Duke of Anhalt-Bernburg, the last Duke of Anhalt-Bernburg.
Relevant evidence: Yes