Question: What year was the Mad Men actor who played Betty's ex-husband on the show born?

full_context: Document 1: Don Draper: Donald Francis "Don" Draper is a fictional character and the protagonist of AMC's television series "Mad Men", portrayed by Jon Hamm. Up to the Season 3 finale, Draper was creative director of Manhattan advertising firm Sterling Cooper. He then became a founding partner at a new firm, Sterling Cooper Draper Pryce, after he and his superiors left their previous agency in advance of an unwanted acquisition. The agency later merged with a rival firm, Cutler Gleason & Chaough, to become Sterling Cooper & Partners while pursuing a contract from Chevrolet.
Document 2: Public Relations (Mad Men): "Public Relations" is the season premiere of the fourth season of the American television drama series "Mad Men", and the 40th overall episode of the series. It was written by series creator and executive producer Matthew Weiner, and directed by Phil Abraham. It originally aired on AMC in the United States on July 25, 2010. The episode takes place in November 1964, as the advertisement agency Sterling Cooper Draper Pryce has just started up, and Don Draper (Jon Hamm) is struggling with his divorce. The agency partners are concerned about the narrow breadth of their client base, which is not helped by Don coming across as less than sympathetic in an interview with a trade magazine. Peggy Olson (Elisabeth Moss) attempts a viral marketing stunt to bring back a disgruntled client, with unexpected repercussions. Meanwhile, Don's ex-wife Betty (January Jones) is struggling to fit in with her new family, and Don encounters problems in his romantic life.
Document 3: Waldorf Stories: "Waldorf Stories" is the sixth episode of the fourth season of the American television drama series "Mad Men", and the 45th overall episode of the series. It was written by Brett Johnson and series creator and executive producer Matthew Weiner, and directed by Scott Hornbacher. The episode originally aired on the AMC channel in the United States on August 29, 2010. This was the same evening that "Mad Men" received the award for Outstanding Drama Series at the 2010 Primetime Emmy Awards.
Document 4: Mad Men: Mad Men is an American period drama television series created by Matthew Weiner and produced by Lionsgate Television. The series premiered on July 19, 2007, on the cable network AMC. After seven seasons and 92 episodes, "Mad Men's" final episode aired on May 17, 2015.
Document 5: January Jones: January Kristen Jones (born January 5, 1978) is an American actress and model, best known for portraying the role of Betty Draper in the television series "Mad Men" (2007–2015), which she received two Golden Globe nominations and one Emmy nomination.
Document 6: Jon Hamm: Jonathan Daniel Hamm (born March 10, 1971) is an American actor, director, and television producer best known for playing advertising executive Don Draper for the AMC television drama series, "Mad Men" (2007–2015).
Document 7: Bryan Batt: Bryan Batt (born March 1, 1963) is an American actor best known for his role in the AMC series "Mad Men" as Salvatore Romano, an art director for the Sterling Cooper agency. Primarily a theater actor, he has had a number of starring roles in movies and television as well. His performance in the musical adaptation of "Saturday Night Fever" earned him one of New York City's more unusual honors, a caricature at Sardi's.
Document 8: Matthew Weiner: Matthew Weiner ( ; born June 29, 1965) is an American writer, director and producer. He is the creator of the AMC television drama series "Mad Men", which premiered in 2007 and ended in 2015. He is also noted for his work on the HBO drama series "The Sopranos", on which he served as a writer and producer during the show's fifth and sixth seasons (2004; 2006–2007). He directed the comedy film "Are You Here" in 2013, marking his filmmaking debut.
Document 9: John Slattery: John M. Slattery Jr. (born August 13, 1962) is an American actor and director. He is best known for his role as Roger Sterling in the AMC drama series "Mad Men" and for his role as Howard Stark in cameo appearances in the Marvel Cinematic Universe films "Iron Man 2", "Ant-Man", and "". He has received four Primetime Emmy Awards nominations and two Critics' Choice Television Awards for "Mad Men". He was also part of the "Mad Men" ensemble cast that won two SAG Awards.
Document 10: Peggy Olson: Margaret "Peggy" Olson is a fictional character in the AMC television series "Mad Men", and is portrayed by actress Elisabeth Moss. Initially, Peggy is secretary to Don Draper (Jon Hamm), creative director of the advertising agency Sterling Cooper. Later, she is promoted to copywriter, the first female writer at the firm since World War II. She later joins Draper when he leaves Sterling Cooper to become a founding member of Sterling Cooper Draper Pryce. By the end of Season 4, Peggy is effectively Draper's second-in-command in the creative department. Towards the end of season five, Peggy accepts a job offer from another agency, CGC, and quits her job at Sterling Cooper Draper Pryce. However, following a merger between SCDP and CGC, Peggy finds herself working again with Don Draper.
Document 11: Mad Men (season 1): The first season of the American television drama series Mad Men premiered on July 19, 2007 and concluded on October 18, 2007. It consisted of thirteen episodes, each running approximately 47 minutes. AMC broadcast the first season on Thursdays at 10:00 pm in the United States. Actors Jon Hamm, Elisabeth Moss, Vincent Kartheiser, January Jones, Christina Hendricks, Bryan Batt, Michael Gladis, Aaron Staton, Rich Sommer, and Maggie Siff receive main cast billing.
Document 12: Rich Sommer: Richard Olen Sommer II (born February 2, 1978) is an American actor, best known for his portrayal of Harry Crane on the AMC drama series "Mad Men". He is also known for his roles in the comedy-drama films "The Devil Wears Prada" (2006), "Celeste and Jesse Forever" (2012), "The Giant Mechanical Man" (2012), and "Hello, My Name Is Doris" (2015).
Document 13: Rosser Reeves: Rosser Reeves (10 September 1910 – 24 January 1984) was an American advertising executive and pioneer of television advertising; Reeves generated millions for his clients. The Ted Bates agency, where he rose to chairman, exists today as Bates 141. The AMC program, "Mad Men", uses Reeves as one model for the professional accomplishments of the series' protagonist, Donald Draper (played by Jon Hamm).
Document 14: List of Mad Men episodes: "Mad Men" is an American period drama television series created by Matthew Weiner and broadcast on the cable network AMC. The series premiered on July 19, 2007, and concluded on May 17, 2015, after seven seasons and 92 episodes. The show is set primarily in the 1960s and is centered on the private and professional life of Don Draper (Jon Hamm), an enigmatic advertising executive on Madison Avenue.
Document 15: Lane Pryce: Lane Pryce is a fictional character in "Mad Men", portrayed by Jared Harris.
ground_truth: 1971