Pearl Bodine (portrayed by Bea Benaderet; 22 episodes in season 1) is Jethro 's widowed mother. In the last season, Granny mentions that Pearl 's husband, Fred Bodine, drowned in a fishing accident when Jethro was just a baby (although, in an earlier episode, Jethro shared some memories of his father with a psychiatrist). Pearl is a generally well - meaning mother to Jethro. She was also a popular character, often used as a foil for Granny, and became a regular part - way through the first season (the end credits were even refilmed to include Pearl with the other family members). The character disappeared after the first year because Benaderet had become the star of another Paul Henning series, Petticoat Junction. She is the daughter of Amos Clampett, Jed 's uncle. Like Elly May, Pearl 's name came from that of a character (Pearl Lester) in the popular rural - life novel, play, and film Tobacco Road. In the episodes "The Clampetts Get Psychoanalyzed '' and "The Psychiatrist Gets Clampetted '', Herbert Rudley plays the psychiatrist Dr. Eugene Twombley, with whom Pearl is enamored; Benaderet 's real - life husband was named Eugene Twombly. In season six, she makes a cameo appearance in the episode "Greetings From The President ''. Jethrine Bodine (played by Baer, but voiced by Linda Kaye Henning; 11 episodes in season 1): Jethrine is Pearl 's king - sized daughter, Jethro 's twin. Jethrine appears in the first season; she moves with her mother to the Clampett mansion later that season, but occasionally is not seen in episodes during her stay in California. Jethrine is upset to leave the hills as it means separation from her "sweetie '', traveling salesman Jasper "Jazzbo '' Depew. Late in the season, it was explained in an episode that Jethrine had returned home to marry Depew, although the wedding was never seen in the series (nor was Jethrine ever seen again, although she was occasionally referenced). Jethro and Jethrine rarely appeared in the same scene in any of the programs, and then they were never on - camera at the same time, except for the rare back - of - the - head shot using a double. (Jethrine also appears in the 1993 movie version.) Dash Riprock (played by Larry Pennell; 10 episodes in seasons 3 -- 7) is a handsome Hollywood actor employed by Jed 's movie studio. Elly May and he meet while she is working as an extra at the studio. When Dash sees the beautiful Elly in her bathing suit, he is smitten with her. The two have an on - and - off relationship. In one episode, Mr. Drysdale forces Dash into courting Elly May by threatening to put him in a television show called Crabman. Elly initially liked Dash and enjoyed being with him on dates; Jethro, however, was quite enamored with Dash because of his playboy persona. Riprock was a send - up of the blatantly fake screen names employed by a number of movie actors of the period. Riprock 's real name (before being changed by Hollywood moguls) was "Homer Noodleman '', and he was from Peoria, Illinois. Lowell Redlings Farquhar (played by Charles Ruggles; three episodes in seasons 4 and 5) is the elderly father of Mrs. Drysdale. Granny considers him a potential beau. Lester Flatt and Earl Scruggs (as themselves in seven episodes, 1963 -- 68) are longtime friends of the Clampetts "back home '' (Kimberling City, Missouri), who visit with the Clampetts when they are on tour in California. The duo had a number - one Billboard country single with the show 's "The Ballad of Jed Clampett '' (although the song is actually performed in the credits by Jerry Scoggins to Flatt and Scruggs ' instrumental). (Actress Joi Lansing played Flatt 's wife, Gladys, in five episodes, 1963 -- 68.) John Brewster (played by Frank Wilcox; 14 episodes, 1962 -- 1966), is the president and CEO of the OK Oil Company, headquartered in Tulsa, who purchases the oil rights to the gusher on the Clampett home back in the hills. The Clampetts are quite fond of him, and his wife occasionally visits them in California. Janet Trego (played by Sharon Tate; 15 episodes, 1963 -- 65) is a beautiful secretary at the Commerce Bank. (Tate was later murdered by Charles Manson 's "family '' just before the start of season 8.) Sam Drucker (played by Frank Cady; 10 episodes in 1968 -- 70) owns the general store in Hooterville. Granny is constantly under the impression Sam wants to marry her, but Sam has no intention of doing so. Cady also starred as Sam Drucker in Petticoat Junction and Green Acres. Cady reprised the role of Sam Drucker for the 1990 Green Acres reunion movie Return to Green Acres. Helen Thompson (played by Danielle Mardi; 17 episodes in 1969 -- 71) is a beautiful British secretary at the Commerce Bank. Helen takes over Jane Hathaway 's job as Mr. Drysdale 's secretary after Miss Hathaway resigned. She is one of the ringleaders of the protest group the secretaries of the Commerce Bank create: GRUN (Girls Resist Unfair Neglect). She, along with many other secretaries, as well as Elly and Granny, live with Miss Hathaway for a short time in her apartment. Shorty Kellums (played by Shug Fisher; 17 episodes in seasons 8 and 9) is Jed 's longtime buddy from back home, with whom Jed reunites in 1969 when the Clampetts go back for an extended period to the Hills. Shorty is a wiry little man who is crazy about voluptuous girls half his age. Shorty later moves into the Clampett mansion in Beverly Hills for a period. Elverna Bradshaw (played by Elvia Allman; 13 episodes, 1963 -- 70) is Granny 's longtime rival back in the Hills, a gossip second to none. Referenced as early as episode 3, she makes a brief appearance in a 1963 episode when the Clampetts go back to the Hills to fetch Pearl to California, but is not seen again until 1969, when the Clampetts return to their native land for an extended visit. However, both Granny and Jed referred to the character in several episodes throughout the series ' run. Elverna and Granny rekindle their feud in a match to see who will be first wed, Elverna 's daughter or Elly May. For reasons not really explained, Elverna also moves into the Clampett Beverly Hills mansion during the same period Shorty does; both of them, however, are gone from the estate for the final 1970 -- 71 season, presumably having returned home. Matthew and Mark Templeton (brothers played by actor Roger Torrey, who had auditioned for the part of Jethro; three episodes in season 8 as Matthew; 9 in season 9 as Mark) Matthew is the preacherman Granny tags as a prospective husband for Elly. Unfortunately, Granny learns Matthew is married. Just a year later back in California, Elly meets Matthew 's brother, Mark Templeton, who is a marine biologist, a frogman, whom Granny believes is actually part frog. The Mark Templeton storyline played out for nine episodes and was abruptly dropped, although advance publicity for the show indicated Elly May and Mark would be marrying during the season; however, the show was canceled at the end of that season as part of the CBS Rural Purge. Cousin Roy (played by Roy Clark; three episodes in seasons 6 and 7) was the Clampetts ' cousin, who came from "The Hills '' to Hollywood; he appeared in three episodes as an aspiring country singer. In furtherance of the running gag of Jethro Bodine 's continuing failure to succeed, Jethro turned down the chance to be Cousin Roy 's agent, who actually succeeded in Hollywood. (In a similar storyline singer Pat Boone guest starred as himself / country singer; Jethro fails to be Boone 's agent!)
who played mr. brewster on the beverly hillbillies
Frank Wilcox