My inbox is filling up with emails arguing that it simply cannot be. Ah, but it can. The genealogy:

John Tyler was born in 1790. Lyon Gardiner Tyler, his fourteenth child of fifteen (eight children by his first wife, seven by his second) was born in 1853, when President Tyler was 63. Harrison Tyler, Lyon Tyler’s fifth child of six (three children by each of his two wives) was born in 1928, when Lyon Tyler was 75. And Harrison Tyler, now 79, still inhabits Sherwood Forest Plantation, the Tyler family home.

From grandfather to grandson, 217 years…and counting.