Question: Which monarchy had this English peeress executed whose adult life is depicted in the 2014 historical novel The King's Curse?
Sentence (from "Elizabeth Boyle, Countess of Guilford"): She was created 1st Countess of Guildford for life at the Restoration on 14 July 1660, which became extinct upon her death c. 3 September 1667.
Relevant evidence: No