Question: What role did the actor who played Colonel Sherman T. Potter in "M*A*S*H" play in "Kentucky Jones"

Context:
Max Charles
Max Charles (born August 18, 2003) is an American teen actor.
 In addition to his appearance in the 2012 film "The Three Stooges", Charles played a young Peter Parker in "The Amazing Spider-Man" and had a role in the ABC comedy science fiction series "The Neighbors".
 In 2014, Charles voiced Sherman in DreamWorks Animation's "Mr. Peabody & Sherman".
 He also voices Sherman on "The Mr. Peabody and Sherman Show" Netflix Series He also played a recurring role in Disney XD's. "
Lab Rats: Bionic Island" as Spin.
 He currently voices Kion on the Disney Junior series "The Lion Guard," and Harvey on the Nickelodeon series "Harvey Beaks".
 He also plays Zack Goodweather on the TV series "The Strain."
Kentucky Jones
Kentucky Jones is a half-hour comedy/drama starring Dennis Weaver as Kenneth Yarborough "K.Y. or Kentucky" Jones, D.V.M., a recently widowed former horse trainer and active horse farm owner, who becomes the guardian of Dwight Eisenhower "Ike" Wong, a 10-year-old Chinese orphan, played by Ricky Der.
 Harry Morgan, previously of the CBS sitcoms "December Bride" and "Pete and Gladys", was featured in the series as Seldom Jackson, a former jockey who assists Dr. Jones.
 Cherylene Lee appears as Annie Ng, Ike's friend.
 Arthur Wong portrays Mr. Ng, Annie's father.
 Keye Luke (1904-1991) stars as Mr. Wong, a friend of Dr. Jones.
 Nancy Rennick (1932-2006) appears as Miss Throncroft, a social worker.
 "Kentucky Jones", which ran on NBC from September 19, 1964, to September 11, 1965, was the first of four television series starring Weaver after he left the role of the marshall's helper Chester Goode on CBS's western classic "Gunsmoke".
Sam Clemmett
Sam Clemmett is a British actor.
 Born in Brundall, Norfolk, Clemmett began his acting career in 2013.
 He is known for being cast as Albus Potter in 2015 for the British play Harry Potter and the Cursed Child.
 His performance in the play has made him popular with Harry Potter fans, as well as the creator of Harry Potter, J.K. Rowling.
 Rowling stated that, "There's much I could say about Sam-as-Albus, but we'd be into spoiler territory so quickly I'll just say we couldn't have cast better."
 He played the role in the West End, until late-Spring 2017.
Paul Winters
Paul Winters (born April 20, 1954 in Pennsylvania) is an American filmmaker, writer, and actor.
 He played Colonel Ben Loftin in the film "Nate and the Colonel" (which also starred Ricco Ross as Nate).
Harry Morgan
Harry Morgan (born Harry Bratsberg, April 10, 1915 – December 7, 2011) was an American actor and director whose television and film career spanned six decades.
 Morgan's major roles included Pete Porter in both "December Bride" (1954–1959) and "Pete and Gladys" (1960–1962); Officer Bill Gannon on "Dragnet" (1967–1970); Amos Coogan on "Hec Ramsey" (1972–1974); and his starring role as Colonel Sherman T. Potter in "M*A*S*H" (1975–1983) and "AfterMASH" (1983–1984).
 Morgan appeared in more than 100 films.
Anthony Bushell
Anthony Arnatt Bushell (19 May 1904 – 2 April 1997) was an English film actor and director, who appeared in 56 films between 1929 and 1961.
 He played Colonel Breen in the BBC serial "Quatermass and the Pit" (1958–59), and also appeared in and directed various British TV series such as "Danger Man".
AfterMASH
AfterMASH is an American sitcom produced as a spin-off and continuation of "M*A*S*H" that aired on CBS from September 26, 1983, to May 31, 1985.
 The series takes place immediately following the end of the Korean War and chronicles the adventures of three characters from the original series: Colonel Potter (played by Harry Morgan), Klinger (played by Jamie Farr) and Father Mulcahy (played by William Christopher).
 "M*A*S*H" supporting cast-member Kellye Nakahara joined them, albeit off-camera, as the voice of the hospital's public address system.
 Rosalind Chao rounded out the starring cast as Soon-Lee Klinger, a Korean refugee whom Klinger met, fell in love with and married in the "M*A*S*H" series finale "Goodbye, Farewell and Amen."
Tenma Shibuya
Tenma Shibuya (Japanese: 渋谷天馬 ,traditional Chinese: 澀谷天馬,simplified Chinese: 涩谷天马,other names: Shibuya Tenma,Segu Tianma; born January 13，1969) is a Japanese actor, Japanese classical dancer, and cultural exchange activist.
 He began his career as an actor in 1993 after returning from US, where he attended college.
 He made appearances in a number of films, stages, and TV dramas in his early acting career in Japan.
 In 2006, Shibuya, aged 36, visited China for the first time, leading his jump into Chinese show business.
 In 2008, Shibuya played Colonel Sato, an impressive villain in Yip Man(Ip Man), a Hong Kong kung-fu movie that won the best film award of 28th Hong Kong Film Awards.
 He starred in the top-rated Chinese TV drama in 2011, Borrow Gun, in which Shibuya successfully portrayed Kato, a character that won him an overnight fame in all of China.
　He has often been cast in the role of a villainous Japanese soldier in Chinese anti-Japanese war films.
 Up until 2015, Shibuya has appeared in over 100 productions including movies, TV dramas and stage works in Japan, China, Hong Kong, Taiwan and the U.S, gaining a great popularity in Asian areas especially in Chinese-speaking areas In addition to acting, he has been a Japanese classical dancer and songwriter for over 20 years.
Victor Beaumont
As Peter Wolff, he appeared in a number of German films ("Revolt in the Reform School, Der brave Suender" etc.) and at least one play ("Die erste Mrs Selby").
 After emigrating to the United Kingdom in the 1930s, he appeared in British films and television dramas from the 1940s and Hollywood films from the 1960s.
 He is perhaps best known for his portrayals of Nazi German characters in films such as "Where Eagles Dare" (1968) in which he played Colonel Weissner, "Carve Her Name with Pride" (1958), "The Guns of Navarone" (1961) and "The Heroes of Telemark" (1965).
Hogan's Heroes
Hogan's Heroes is an American television sitcom set in a German prisoner of war (POW) camp during World War II.
 It ran for 168 episodes from September 17, 1965 to April 4, 1971 on the CBS network.
 Bob Crane starred as Colonel Robert E. Hogan, coordinating an international crew of Allied prisoners running a Special Operations group from the camp.
 Werner Klemperer played Colonel Wilhelm Klink, the incompetent commandant of the camp, and John Banner played the bungling sergeant-of-the-guard, Sergeant Schultz.

Answer: Seldom Jackson