Harrison Ruffin Tyler.

About Harrison Ruffin Tyler

Harrison Ruffin Tyler was an American businessman, preservationist, and archivist. Tyler was the last living grandchild of the tenth U.S. president, John Tyler (1790–1862). The period from the president's birth to his last grandchild's death spanned 235 years. Harrison Tyler was prominent in preserving Sherwood Forest Plantation, the Tyler ancestral home, and nearby Fort Pocahontas. He 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 businessman who co-founded ChemTreat, Inc., a water treatment company.