What nickname appears on every official NFL (National Football League) football?
Correct answer: The Duke

Player #1081396
at least the NFL has recognized one of the founding families of their league.

Curt
Thanks to George Halas for making this happen,

DawnyC
I thought John Wayne’s nickname was the Duke

Player Say what!?
DawnyC, Yes it was, but THIS Duke had the nickname way before Wayne got his.

BenThomWood
As a fan of the Chicago Bears since before 1985 I’m ashamed to type I didn’t know this.

Player Say what!?
BenThomWood, That's OK. As a major Broncos fan since the early 70's, I never knew this factoid either.