Peter Reesor (December 25, 1775 – November 16, 1854) was one of the original settlers of Markham, Ontario.
He was born on December 25, 1775, in Lancaster County, Pennsylvania, to Christian Reesor (1747–1806) and Veronica (Fanny) Reiff (1751–1818).[1] Reesor's grandparents Peter Rieser (1713-1804) and Elizabeth Hershey had moved from Switzerland to Bavaria and then to America in 1739.[2]