David Canary who played "Candy" Canaday (No first name was ever given for Candy) joined the cast in 1967. To be exact, the episode in which David Canary first appeared was titled "Sense of Duty" which aired on September 24, 1967. This picture is not David Canary.
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David Canary is the actor who played "Candy" Canaday.
Below is a link to the full cast and crew of the Bonanza episode The infernal Machine.
The cast of The Gullible Canary - 1942 includes: Sara Berner as Canary Wife Harry Lang as Canary
Lorne Greene.
The cast of Canary Beat - 2006 includes: Konstantin Lom
The cast of Canary - 2008 includes: Nick Masciangelo Alexandra Tabas
The cast of Canary Suicides - 2010 includes: Cindy Baer as Birdbath Canary Tara Dolan as Sue Osman Hassan as Hanging Canary Sean Lapp as Holiday Depression Canary Masashi Odate as Hari-Kari Canary
The cast was all adults, no children.
The cast of Cash Bonanza - 2001 includes: Larry Emdur as Himself - Host
The cast of Canary Row - 1950 includes: Bea Benaderet as Granny
The cast of Canary of the Ocean - 1997 includes: Andie MacDowell as Narrator