Question:  Patricia Blair played Lou Mallory on the ABC western series "The Rifleman", in which she appeared in 22 episodes with Chuck Connors, best known for his five-year role as what character in the highly rated ABC series "The Rifleman" (1958–63)?
Context: Law of the Plainsman is a Western television series starring Michael Ansara that aired on the NBC television network from October 1, 1959, until May 5, 1960.  The character of Native American U.S. Marshal Sam Buckhart was introduced in two episodes ("The Indian" and "The Raid") of the popular ABC Western television series "The Rifleman" starring Chuck Connors as Lucas McCain. "The Rifleman" is an American Western television program that starred Chuck Connors as homesteader Lucas McCain and Johnny Crawford as his son, Mark McCain.  The series was set in the 1880s in the town of North Fork, New Mexico Territory and was filmed in black-and-white with a half hour running time.  "The Rifleman" aired on ABC from September 30, 1958 to April 8, 1963 as a production of Four Star Television. Lucas McCain is a fictional character in the Western television series, "The Rifleman", which ran on ABC from 1958 to 1963.  A rancher and widowed father with a penchant for using his Winchester firearm as a last resort, the part was portrayed by former athlete-turned-actor Chuck Connors. The Rifleman is an American Western television program starring Chuck Connors as rancher Lucas McCain and Johnny Crawford as his son Mark McCain.  It was set in the 1870s and 1880s in the fictional town of North Fork, New Mexico Territory.  The show was filmed in black-and-white, half-hour episodes.  "The Rifleman" aired on ABC from September 30, 1958, to April 8, 1963, as a production of Four Star Television.  It was one of the first prime time series on American television to show a widowed parent raising a child. John Ernest "Johnny" Crawford (born March 26, 1946) is an American character actor, singer, and musician.  At age 12, Crawford rose to fame for playing Mark McCain, the son of Lucas McCain (played by Chuck Connors), in the popular ABC Western series, "The Rifleman," which originally aired from 1958 to 1963.  Crawford first performed before a national audience as a Mouseketeer. Peter Paul Fix (March 13, 1901 – October 14, 1983) was an American film and television character actor, best known for his work in Westerns.  Fix appeared in more than a hundred movies and dozens of television shows over a 56-year career spanning from 1925 to 1981.  Fix was best known for portraying Marshal Micah Torrance, opposite Chuck Connors's character in "The Rifleman" from 1958–1963.  Fix later appeared with Chuck Connors in the 1966 western film "Ride Beyond Vengeance". Kevin Joseph Aloysius “Chuck” Connors (April 10, 1921 – November 10, 1992) was an American actor, writer and professional basketball and baseball player.  He is one of only 12 athletes in the history of American professional sports to have played both Major League Baseball and in the National Basketball Association.  With a 40-year film and television career, he is best known for his five-year role as Lucas McCain in the highly rated ABC series "The Rifleman" (1958–63). Herschel Burke Gilbert (April 20, 1918 – June 8, 2003) was a prolific orchestrator, musical supervisor, and composer of film and television scores and theme songs, including "The Rifleman" (starring Chuck Connors), "Dick Powell's Zane Grey Theater", and "The Detectives Starring Robert Taylor".  Gilbert once estimated that his compositions had been used in at least three thousand individual episodes of various television series. Mark McCain is the son of rancher Lucas McCain in the ABC Western television series "The Rifleman," which ran from 1958 to 1963.  Singer/actor and former Mousketeer Johnny Crawford was cast in the role, and was nominated for an Emmy Award in 1959 as Best Supporting Actor (Continuing Character) in a Dramatic Series.  The award went to Dennis Weaver, then portraying Chester Goode on CBS's "Gunsmoke". Patricia Blair (born Patsy Lou Blake; January 15, 1933 – September 9, 2013) was an American television and film actress, primarily on 1950s and 1960s television.  She is best known as Rebecca Boone in all six seasons of NBC's "Daniel Boone", with co-stars Fess Parker, Darby Hinton, Veronica Cartwright, and Ed Ames.  She also played Lou Mallory on the ABC western series "The Rifleman", in which she appeared in 22 episodes with Chuck Connors, Johnny Crawford and Paul Fix.
Answer: Lucas McCain