3- Meg, Chris, and Stewie.he actually has more childrenin the "Juice is Lose" episode it reveals that he had a sonnamed Peter griffin Jrand Chris often says that he remembers Meg killing another oneof theier sisters though Peter and Lois promptly deny italso there was the incident at the sperm bank where Peterspilled the containers causing him to fill all of them back upagain and that caused Bertrum to be bornthere may be more children than that but the creators have yetto announce themAlso in "Screwed the Pooch" that Meg's true father is revealedto be Stan Thomson.