He was born and raised in Kingston, Ontario in a United Empire Loyalist family, the son of Harriet Dobbs Cartwright and the grandson of Richard Cartwright, a Loyalist who was expelled from the U.S. at the time of the War of Independence.Canadian Encyclopedia (2000), p. 415 His father, Robert Cartwright, was an Anglican minister. His uncle, John Solomon Cartwright, was his father’s twin brother and a notable businessman, lawyer, banker, and politician, being a member of the last Legislative Assembly of Upper Canada and then a member of the first Legislative Assembly of the Province of Canada.
