Family Guy is completely fictional. It's known for its outrageous and imaginative characters and situations that are not drawn from real life. The show is all about entertainment and comedy rather than being based on actual events.
Well, it could be a story about a dysfunctional family or one with lots of funny and heartwarming moments. But without more context, it's hard to say exactly.
The Simpsons and Family Guy share some common ground when it comes to family values. They show that families can be dysfunctional yet loving. In The Simpsons, Marge is often the voice of reason trying to keep the family together. Similarly, in Family Guy, Lois has her moments of trying to hold the Griffin family in line. Both shows also touch on how different generations within a family interact, with the kids having their own dreams and the parents having their own expectations.
One interesting Peter story is when he tried to start his own brewery. It was a chaotic mess with all kinds of wacky experiments and misadventures. He had these wild ideas about the types of beer to make, but things kept going wrong, like the beer exploding or having really strange flavors.