<P> Stewart Gilligan `` Stewie '' Griffin ( voiced by Seth MacFarlane ) is the Griffin 's 1 - year - old child , but often behaves in adult ways such as speaking in an upper - class British accent . He is a child genius who frequently aspired to murder his mother Lois and take over the world but has since mellowed out considerably . Stewie built a time machine with which he and Brian have traveled through time . He turned 1 year old in `` Chitty Chitty Death Bang , '' and has not aged past one year since . As a fact in `` Road to Rupert , '' he says he is a year old . </P>
<P> Stewart Gilligan `` Stewie '' Griffin ( voiced by Seth MacFarlane ) is the Griffin 's 1 - year - old child , but often behaves in adult ways such as speaking in an upper - class British accent . He is a child genius who frequently aspired to murder his mother Lois and take over the world but has since mellowed out considerably . Stewie built a time machine with which he and Brian have traveled through time . He turned 1 year old in `` Chitty Chitty Death Bang , '' and has not aged past one year since . As a fact in `` Road to Rupert , '' he says he is a year old . </P>
what is the babys name in family guy
what is the babys name in family guy
Stewart Gilligan `` Stewie '' Griffin
Stewart Gilligan `` Stewie '' Griffin