Grant Goodeve

Grant Goodeve is an American actor and television host. He is best known for playing the role of David Bradford, the oldest son, on Eight Is Enough, from 1977 to 1981. He sang the theme song for the show as well. More recent work includes Home amp Garden Television and voice roles, such as the Engineer in the multiplayer video game Team Fortressand Wolf ODonnell in Star Fox Assault.

Goodeve was born in Middlebury, Connecticut. He moved to Los Angeles, California, in 1975. His earliest role was on a fifth season episode of Emergency!. After a February 1977 screen test, he signed up as a cast member of Eight Is Enough, taking over a role played in the shows pilot episode by Mark Hamill.

Source: Wikipedia