<Tr> <Th> Relatives </Th> <Td> Robert L. Crawford, Jr. (brother) </Td> </Tr> <Tr> <Th> Website </Th> <Td> Johnny Crawford fansite </Td> </Tr> <P> John Ernest "Johnny" Crawford (born March 26, 1946) is an American character actor, singer, and musician . At age 12, Crawford rose to fame for playing Mark McCain, the son of Lucas McCain (played by Chuck Connors), in the popular ABC Western series, The Rifleman, which originally aired from 1958 to 1963 . Crawford first performed before a national audience as a Mouseketeer . </P> <P> Crawford was born in Los Angeles, the son of Betty (née Megerlin) and Robert Lawrence Crawford, Sr. His maternal grandparents were Belgian; his maternal grandfather was violinist Alfred Eugene Megerlin . In 1959, Johnny, his older brother Robert L. Crawford, Jr., a co-star of NBC's Laramie series, and their father Robert, Sr., were all nominated for Emmy Awards (the brothers for acting and their father for film editing). </P>

What was mark's real name on the rifleman