Stewart

Stewart is one of Dennis' friends. He only appears in six episodes of the first season of the live action series.

He was played by Ron Howard, who was then known as Ronny Howard. he was sometimes uncredited

Appearances in the 1959 live action series

 * Dennis by Proxy
 * The Party Line
 * Mr. Wilson's Sister
 * Dennis Haunts a House
 * The Fishing Trip
 * Dennis and the Signpost