Frederick Cornwallis was a British clergy member who served as Archbishop of Canterbury after a career in the Church of England. He was born the seventh son of an aristocratic family.

Edward Cornwallis was a British career military officer and member of the aristocratic Cornwallis family, who reached the rank of Lieutenant General. After Cornwallis fought in Scotland, putting down the Jacobite rebellion of 1745, he was appointed Groom of the Chamber for King George II. He was then made Governor of Nova Scotia (1749–1752), one of the colonies in North America, and assigned to establish the new town of Halifax, Nova Scotia. Later Cornwallis returned to London, where he was elected as MP for Westminster and married the niece of Robert Walpole, Great Britain's first Prime Minister. Cornwallis was next appointed as Governor of Gibraltar.