Question: Who's son concluded a set of treaties which ended the American Revolutionary War?
Sentence (from "John Petty, 2nd Marquess of Lansdowne"): He was the eldest son of William Petty, 1st Marquess of Lansdowne, known to history as the Earl of Shelburne, the British prime minister who concluded the Peace of Paris recognising American independence, by his first wife, Lady Sophia Carteret.
Relevant evidence: Yes