Stewart Gilligan Griffin is forever youthful, but his precise age remains a mystery. It's unknown the exact number of years Stewie has been on this planet. The baby persona from the animated television show "Family Guy" is age-defying. His number of years is yet to be revealed.
Stewie Griffin, the cunning infant prodigy, is impossible to determine from the world. Speculation runs rampant as to his actual age. Is he over a hundred years old? Or is he a recent arrival? The truth lies only with Stewie! This enigmatic character continues to intrigue fans with his unrevealed age and perpetually youthful visage.