John Adams Gates

John Adams Gates
Gender	Male
Eyes	Blue
Hair	White
Born	c. 1906
Family	Patrick Henry Gates (son) Emily Appleton Gates (ex-daughter-in-law) Benjamin Franklin Gates (grandson)
First appearance	National Treasure
Portrayed by	Christopher Plummer

"Grandpa!"

―Young Benjamin Franklin Gates after his grandfather catches him in the attic.

John Adams Gates is the father of Patrick Henry Gates and the grandfather of Benjamin Franklin Gates. In 1974, to Patrick's dismay, he tells Ben about the Templar Treasure.