I've always been fascinated with this story. John Tyler's 13th son was born when Tyler was 70 years old, then his son's son was born when he was in his 70's, and this is why a grandson was still alive until just the other day.
www.newsweek.com
Last Living Grandson of 10th US President Dies Aged 96
Harrison Ruffin Tyler, the last living grandson of the 10th U.S. President John Tyler, has died aged 96. Tyler died on May 25, CBS News reported, citing a family statement.
His death marks the end of a direct familial link to a president who served before the Civil War.
The Context
President Tyler served from 1841 to 1845 following the death of President William Henry Harrison, to whom he had been vice president. He died in 1862 aged 71, decades before the birth of his last living grandson, Harrison.
Following his term in office, Tyler became an elected member of the Confederate Congress of the Confederate States of America in 1861.
Last living grandson of 10th US President dies aged 96
Harrison Ruffin Tyler's family said the last connection to the 19th century president has passed away.