Question: What is the date of death of John Bowes, 10Th Earl Of Strathmore And Kinghorne's mother?
Sentence (from "Mary Bowes, Countess of Strathmore and Kinghorne"): Mary Eleanor Bowes, Countess of Strathmore and Kinghorne (24 February 1749 – 28 April 1800), known as "The Unhappy Countess", was an 18th-century British heiress, notorious for her licentious lifestyle, who was married at one time to the 9th Earl of Strathmore and Kinghorne.
Relevant evidence: Yes