Before becoming well known for his function as Tag McCain over the long-running western series, The Rifleman, he freelanced for just two plus years, accumulating over 60 Television credits. He started his profession as a genuine Mouseketeer at age group nine. He was nominated for the 1959 Primetime Emmy for his function in The Rifleman. He wedded Charlotte Crawford in 1995. He acted with John Wayne in the 1966 traditional western, El Dorado.