Not long ago I was flying with this Captain and at one point he mentioned his dad was in the war. I said, he was in world war II? No, actually World War I. Infantry I believe. His dad was an old man when he was born.
That said, turns out the 10th President John Tyler who was born in 1790 and President from 1841-1845 still has grandsons alive. It's what happens when you have a son at 63 and he fathers sons in his 70s and those sons live a long time as well.
Dirty old men. Seriously, what do they think they are, L1011 Captains?