Donald A. Losby, Jr (born May 26, 1951 in San Francisco, California) is an American actor, known primarily for his many character roles in popular television during the 1950s and 1960s in programs such as The Adventures of Ozzie and Harriet, The Andy Griffith Show, The Twilight Zone, Wagon Train, Bonanza, Rawhide, Route 66, The Fugitive, Ben Casey, Lassie, My Three Sons, Gunsmoke (1966 “The Whispering Tree), Daniel Boone, Blue Light, Lost in Space ("Return from Outer Space"), and The Young Rebels, as well as a small number of movies, typically playing the role of someone's son or brother, as in The Mating Game (film) with Debbie Reynolds.
1968
as Davey
1965
as Davey Sims
1964
as Young Hank Williams
1963
as Sean DeBose
1963
as Mark Welles (uncredited)
1963
as Geoffrey Von Hagedorn
1962
as Prince Richard
1960
as Steve
1959
as 1st Venusian
1959
as Grant Larkin
1959
as Paul Wylie
1957
as Jim Shawnessy - Age 2 (uncredited)