Question: What is the date of death of Gladys Spencer-Churchill, Duchess Of Marlborough's husband?
Sentence (from "Charles Spencer-Churchill, 9th Duke of Marlborough"): Charles Richard John Spencer-Churchill, 9th Duke of Marlborough, (13 November 1871 – 30 June 1934), styled Earl of Sunderland until 1883 and Marquess of Blandford between 1883 and 1892, was a British soldier and Conservative politician, and a close friend of his first cousin Winston Churchill.
Relevant evidence: Yes