Stewart Gilligan Griffin is timeless, but his specific age remains a mystery. It's unclear how old Stewie entered on this planet. The infant persona from the animated television show "Family Guy" is age-defying. His age is yet to be determined.
Stewart Gilligan Griffin, the mischievous baby genius, is keeping his age a secret from the world. Speculation runs rampant as to his actual age. Is he ancient beyond measure? Or is he fresh to the world? The truth lies only with Stewie! This mysterious character continues to intrigue fans with his undisclosed age and perpetually youthful visage.