Wow, that didn't make much sense to me until I read:

> President John Tyler was 63 when Lyon Gardiner Tyler was born; Lyon was 75 when Harrison entered the world.

John Tyler died when he was 71, when his son Lyon was only 8. Lyon died at 81, when his son Harrison was only 6. I know it's not that uncommon in general that people lose their parents at a relatively young age, but in this case their fathers essentially chose this path.

Seems Harrison had his kids when he was in his 30s... "tradition" broken, I guess. Good that he got to see his kids grow up.