When Brian is afraid that he has lost his chance at love, he goes in search of a former flame, Tracy, only to discover he is the father of her unruly son, Dylan. From Family Guy Season 6.
Also, Dylan is scheduled to show up in Family Guy Season 7 in “Son of a Brian”:
6ACX29 “Son of a Brian”: Brian’s son, Dylan, returns after Tracy dies of heart disease. So Dylan is now forced to live with Brian for the rest of his life. Worried about Brian’s obsoleteness from before, Lois tries to make sure it doesn’t happen …read more

Yay!!! Here’s the entire episode of The Former Life of Brian!!

Okay! So what did you think of The Former Life of Brian? I thought that parts of it were truly inspired; I liked seeing Brian in another role instead of just being Peter’s whipping boy, and it was interesting to see how Brian’s new son Dylan added another dimension to Peter and Lois’s parenting. Here’s a few good quotes:
Lois: I don’t know, Brian. Raising a child is a very rewarding experience.
Peter: You know what else is rewarding, Lois? Shutting your Vag.
Lois: What?
Peter: What?
Dylan: Knock Knock?
Brian: Who’s there?
Dylan: You’re there.
Brian: I’ll always be there Dylan.
Stewie: Brian, this is painful. It’s like …read more

April 27, 2008 will give us a NEW Family Guy episode titled “The Former Life of Brian”. When Brian is afraid that he has lost his chance at love, he goes in search of a former flame Tracy (Harvey Fierstein) only to discover he is the father of her unruly son, Dylan. After Brian’s surprise visit, Tracy drops Dylan off at the Griffin’s so Brian can raise him. Subsequently, his new little angel begins terrorizing the Griffin household and Brian’s self-important attitude toward parenting infuriates Peter and Lois in “The Former Life of Brian” episode of FAMILY GUY airing Sunday, …read more