Biography: Dennis Holmes is a former child actor whose longest-running role was from 1961 to 1963 as the orphaned Mike Williams in more than fifty episodes of the NBC western television series Laramie, starring with John Smith, Robert Fuller, Spring Byington, and Stuart Randall. Prior to joining Laramie, he appeared in the comedy Bringing Up Buddy. He also guest starred on The Adventures of Ozzie and Harriet