Stewart Gilligan Griffin is eternally young, but his specific age remains a mystery. It's unknown the specific duration of time Stewie has been on this planet. The baby persona from the animated television show "Family Guy" is age-defying. His time on Earth is yet determined.
Stewie Griffin, the cunning infant prodigy, is impossible to determine from the world. Speculation abounds as to his actual age. Is he over a hundred years old? Or is he a newcomer? The truth lies only with Stewie! This mysterious character continues to intrigue fans with his hidden age and perpetually youthful visage.

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