The 10th U.S. president, John Tyler, lived from 1790 to 1862. Remarkably, his last grandson, Harrison Ruffin Tyler, just died on May 25, 2025 at the age of 96. How is this possible?
Given that timeframe, living family members are usually at least six generations removed from ancestors, according to the International Society of Genetic Genealogy, especially considering a generation is typically 20 to 30 years.
