text: Main cast For the original five-episodes miniseries (season 1) six actors received star billing: Barbara Bel Geddes as Ewing matriarch Miss Ellie, whose family were the original owners of Southfork; Jim Davis as her husband Jock, the founder of Ewing Oil and head of the Ewing family; Patrick Duffy as their youngest son, Bobby; Victoria Principal as Pamela Barnes Ewing, the daughter of the rival Barnes family whom Bobby brings home as his wife in the pilot episode; Larry Hagman as J.R. Ewing, the oldest son, who strongly objects to his new sister-in-law; and Charlene Tilton as Lucy, Bobby's. J.R's. and Ray's teenage niece, who adores Bobby, Ray but resents J.R. for disposing of her parents in order for her to be raised by "true Ewings".
  Not receiving top billing during season 1, although appearing in the majority of the episodes, were Linda Gray as Sue Ellen, J.R.'s long-suffering, alcoholic wife; Steve Kanaly as Pam's ex-boyfriend Ray Krebbs, a Southfork ranch hand who would later turn out to be Jock's illegitimate son; and Ken Kercheval as Pam's brother Cliff Barnes, J.R.'s archrival. Gray and Kanaly were promoted to the regular cast as of the first episode of season 2 and Kercheval as of the first episode of season 3. David Wayne received guest star billing as Willard "Digger" Barnes.
  Further on in the series, several new characters were added as the original actors departed the series:
  For season 5, after guest starring since season 2, Susan Howard joined the main cast as Donna Culver Krebbs, politician and widow of a former Texas governor, who becomes Ray's first wife and mother to his daughter Margaret.