Stewie is timeless, but his precise age is shrouded in secrecy. It's unclear how old Stewie entered on this planet. The infant persona from the animated television show "Family Guy" is forever young. His number of years is yet to be determined.
Stewart Gilligan Griffin, the clever little troublemaker, is keeping his age a secret from the world. Speculation runs rampant as to how many years he has been alive. Is he a century old? Or is he a recent arrival? The truth lies only with Stewie! This mysterious character continues to mesmerize fans with his unrevealed age and youthful appearance.