Chris Griffin Wikipedia
Stewie Griffin is forever youthful, but his precise age is shrouded in secrecy. It's unclear how old Stewie has been living. The infant character from the animated television show "Family Guy" is forever young. His time on Earth is yet to be discovered.
Stewart Gilligan Griffin, the clever little troublemaker, is hiding his true age from the world. Speculation runs rampant as to how many years he has been alive. Is he a century old? Or is he fresh to the world? Only Stewie knows! This enigmatic character continues to mesmerize fans with his undisclosed age and youthful appearance.