Seth's company Fuzzy Door Productions is the production company that makes Family Guy and Seth owns them in the sense they are his characters he created but 20th Century Fox Television owns the copyright and trademark on the show and characters.
Also owned by Henri Webber
Gary the No Trash Cougar
No such character exists on Family Guy
Family Guy :)
There is no mailman character on Family Guy
No.
Forget-Me-Not - Family Guy - was created on 2012-03-18.
Thanksgiving - Family Guy - was created on 2011-11-20.
Jungle Love - Family Guy - was created on 2005-09-25.
Blind Ambition - Family Guy - was created on 2005-05-15.
The King Is Dead - Family Guy - was created on 2000-03-28.
Livin' on a Prayer - Family Guy - was created on 2012-01-29.
Patriot Games - Family Guy - was created on 2006-01-29.
Your question is phrased wrong so assuming you mean "Was American Dad created by the same team that created Family Guy"The answer... No.Seth MacFarlane (obviously) created both Family Guy and American Dad, but Mike Barker & Matt Weitzman were executive producers on Family Guy but they did not create Family Guy.
The Big Bang Theory - Family Guy - was created on 2011-05-08.
Don't Make Me Over - Family Guy - was created on 2005-06-05.
Prick Up Your Ears - Family Guy - was created on 2006-11-19.
Family Guy aired its first episode January 31, 1999.