<Tr> <Th> Spouse (s) </Th> <Td> Jill Latiano (m . 2009) </Td> </Tr> <Tr> <Th> Children </Th> <Td> </Td> </Tr> <P> Glenn Franklin Howerton III (born April 13, 1976) is an American actor, producer, and screenwriter . He is known for his roles as Dennis Reynolds in It's Always Sunny in Philadelphia, for which he is also a writer and executive producer, and Jack Griffin in A.P. Bio, as well as the lead role in the short - lived sitcom That' 80s Show . </P> <P> Howerton was born in Japan, the son of American couple Janice and Glenn Franklin Howerton Jr., a fighter pilot . Almost immediately after his birth, his family moved to Arizona and then New Mexico for a short while . They then moved to Felixstowe, England when he was 3 years old . Afterwards they moved to Virginia, followed by Seoul, South Korea . When he was 10 years old, his family moved to Alabama . After graduating from Jefferson Davis High School in Montgomery, Alabama, he spent two years at New World School of the Arts in Miami, Florida . He was part of Group 29 of the Juilliard School's Drama Division (1996--2000), where he graduated with a Bachelor of Fine Arts . </P>

Who plays dennis on it's always sunny