Recap / Family Guy S 12 E 21 Chap Stewie

Stewie goes back in time and fixes it so that way he'll never be born to the Griffin family, but he soon finds he's been born to a Downton Abbey-esque British family in an alternate timeline.

Tropes associated with this episode include:

http://tvtropes.org/pmwiki/pmwiki.php/Recap/FamilyGuyS12E21ChapStewie