John Anderson
Who guest starred in the most episodes of "The Rifleman?"
Who is your favorite character actor?

 John Beaumont in 'Shotgun Man'

Chet Packard in 'Shivaree'

 Ely Flack in 'The Hawk' 

Will Temple in 'The Journey Back'

 Cass Callicott in 'Day of the Hunter'

 Jess Profit in the 'Mail Order Groom'

Owny in 'The Retired Gun' 

Hank Clay in 'Face of Yesterday'

Gangling in 'Incident at Line Shack Six'

Sully Hobbs in 'The Patsy'

 Sam Gibbs 'Old Man Running' aka 'The Wanted Man'

Did you know that..... Chuck was older then  John Anderson? 
 

Chuck was born April 10, 1921	John was born  October 20, 1922 in Clayton, Illinois
Chuck died November 10, 1992	John died August 7, 1992 in Sherman Oaks, California of a heart attack

Even though Chuck was older then John, John played Chuck's father-in-law in "Old Man Running" aka "The Wanted Man" (episode—#166).  That makes him Johnny Gibbs "Pa!"  (The Brother-in-law—episode #5)
Still, having a father-in-law just a few months younger is an interesting concept! A credit to Anderson's ability to morph into a character. He's listed as 6' 51/2" too.
 Thanks Kurt Burgess for the info! 

John Anderson — Find A Grave