All of them except for Candy Quahog Marshmallow & Welcome Back Carter.
He appears for a few seconds in a wide exterior shot of the Griffin house waving goodbye as Peter & Lois drive away in The Splendid Source. In the DVD version of the episode, there is a scene with Stewie & Brian.
He has four. Chris, Megan, Stewie and Bertram (deceased).
This happens in many episodes. It is just Stewie trying to annoy Brian. Throughout Season 7 it happens more.
Stewie told Brian he had killed Seven babies.
The Fifth Doctor appeared in 69 episodes.
According to Simpsons Wiki, In 25 Seasons, she's appeared in 56 episodes
He appeared in 15 episodes 1985-1986.
Here are the Stewie facts I know: His full name is Stewart Gilligan Griffin, His birthday is the 18th of April, his character is based on Rex Harrison (from 'My Fair Lady'), he has so far had three jobs (following fat people around with a tuba in 'No Chris Left Behind', as a McBurgertown employee in 'Baby Not on Board' and as a Big Pete's House of Munch cook in 'No Meals on Wheels'), Seth MacFarlane quoted that he is almost certainly gay and Stewie Griffin: The Untold Story was originally going to be called 'Queer Is Stewie?' (its plot about Stewie coming out), he has appeared in many other programmes (in 'Bones' as a hallucination seen by Agent Seeley Booth in 2009, at the 59th Primetime Emmy Awards in 2007 with Brian singing 'If You Want it You Can Find it on TV' to the tune of 'The Freakin' FCC' and in a short clip at the 20th annual MTV Video Music Awards insulting 50 Cent) and some of his classic quotes are: "What the deuce?!", "Damn you, vile woman!", "Victory is mine!" and of course "Cool whip". Hope this helps :)
Peter and Lois have two sons, Stewie and Chris.It was revealed in The Juice is Loose that Lois and Peter had a third son, Peter Griffin Junior that Peter apparently accidentally killed after shaking him to hard.There are also Jake, Tom Tucker's son.Cleveland Jr, Cleveland's son.Patrick, Carter Pewterschmidt's son.Neil, Mort & Muriel's son.
9
The Seventh Doctor appeared in 43 episodes (comprised of 13 stories).
About ten.
2