Question: What is the cause of death of Princess Louise Of Schleswig-Holstein-Sonderburg-Glücksburg's husband?
Sentence (from "Princess Louise Caroline of Hesse-Kassel"): Princess Louise Caroline of Hesse- Kassel( 28 September 1789 – 13 March 1867) was the consort of Friedrich Wilhelm, Duke of Schleswig- Holstein- Sonderburg- Glücksburg and the matriarch of the House of Schleswig- Holstein- Sonderburg- Glücksburg, which would eventually become the ruling house of the kingdoms of Denmark, Greece, Norway, and the United Kingdom.
Relevant evidence: No