Stewie Griffin Wikipedia
Stewie is forever youthful, but his specific age is shrouded in secrecy. It's unknown how old Stewie entered existing. The toddler persona from the animated television show "Family Guy" is forever young. His time on Earth is yet determined.
Stewart Gilligan Griffin, the mischievous baby genius, is keeping his age a secret from the world. Speculation is 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 captivate fans with his unrevealed age and forever young facade.