Quadruples (four babies) born on a leap year, that happens every fourth (4th) year. I find that coincidence both amazing and incredible. Anyway...
Here's my set:
Rufus,
Samson,
Zacharias, and,
Jethro.
A thought:
The parents of actor siblings John and Joan Cusack?
I guess they didn't know they named their kids the very same name.
Then again, how did they not even know, or was told, this fact?