Harrison Ruffin Tyler

Harrison Ruffin Tyler (November 9, 1928 – May 25, 2025) was an American preservationist and archivist who, at the time of his death in 2025, was the last surviving grandson of the tenth U.S. president, John Tyler (1790–1862). The time between the president's birth and his grandson's death spanned 235 years. Harrison Tyler was prominent in preserving Sherwood Forest Plantation, the Tyler ancestral home, and nearby Fort Pocahontas. He also donated voluminous historic family materials and funds to the history department at the College of William & Mary, which bears his name. Tyler was also a chemical engineer and business man who co-founded ChemTreat, Inc., a water treatment company.