Question: When did the first titleholder of the title in the Peerage of Great Britain that was created in 1965 die?
Sentence (from "Earl Spencer (peerage)"): Previously, he had been created Viscount Spencer, of Althorp in the County of Northampton, and Baron Spencer of Althorp, of Althorp in the County of Northampton, on 3 April 1761.
Relevant evidence: No