Question: When was actor who portrayed the owner of the Southfork Ranch in the soap opera, "Dallas," born?

Context articles: Patrick Duffy
Cloyce Box Ranch
Marta Del Sol
Victoria Newman
Dallas Reunion: The Return to Southfork
Ann Ewing (Dallas)
Texas Music Revolution
Dallas (1978 TV series)
Southfork Ranch
Ewing family (television)

Patrick Duffy (born March 17, 1949) is an American actor, best known for his role on the CBS primetime soap opera "Dallas", where he played Bobby Ewing, the youngest son of Miss Ellie and the nicest brother of J.R. Ewing (played by Barbara Bel Geddes and Larry Hagman) from 1978 to 1985 and from 1986 to 1991.
 Duffy returned to reprise his role as Bobby in a continuation of "Dallas", which aired on TNT from 2012 to 2014.
 He is also well known for his role on the ABC sitcom "Step by Step" as Frank Lambert, from 1991 to 1998, and for his role as Stephen Logan on the CBS daytime soap opera "The Bold and the Beautiful" (2006-2011).
 Duffy played the lead character's father in the 2014 NBC sitcom "Welcome to Sweden".
The Cloyce Box Ranch was the site of the original Southfork ranch location, where the initial five episodes of "Dallas" were filmed.
 The series left that location at the end of the first season in 1978 due to a request by the property owner Cloyce K. Box.
 The show moved to the ranch "Duncan Acres", near Plano, Texas, where the series was filmed for the rest of its run.
Veronica Martinez known by her alias Marta Del Sol is a fictional character from the American soap opera "Dallas", played by Leonor Varela.
 The characters of J. R. Ewing (Larry Hagman) and John Ross Ewing (Josh Henderson) feature heavily in Marta's storyline.
 Marta partners with the duo and they attempt to steal the Southfork Ranch from Bobby Ewing (Patrick Duffy).
 Marta falls in love with John Ross and Varela said that it is one of Marta's more genuine moments.
 But she believed that John Ross would never be able to maintain the same respect for her.
 With similar personalities they are well matched; but John Ross' relationship with Elena Ramos (Jordana Brewster) causes Marta to become jealous and obsessive.
 Varela's departure was announced in July 2012.
 Marta was murdered and John Ross wrongly accused of the crime.
Victoria Newman is a fictional character from "The Young and the Restless", an American soap opera on the CBS network.
 Created by William J. Bell, she is currently portrayed by Amelia Heinle.
 Victoria was born onscreen in 1982 and was portrayed by child actress Ashley Nicole Millan for her first eight years.
 Having been rapidly aged to a teenager, Victoria returned to the soap opera and was portrayed by Heather Tom.
 Tom portrayed the character into her early adult years and remained in the role for twelve years.
 Due to creative differences, Tom left the soap opera in 2003 and Heinle, who took over on March 21, 2005, was cast in the role.
Dallas Reunion: The Return to Southfork is a 2004 American television special celebrating the 1978–1991 prime time soap opera "Dallas" that aired on CBS on Sunday, November 7, 2004 from 9:00 to 11:00 p.m. ET/PT.
Ann Ewing (maiden name Smith; formerly Ryland) is a fictional character from the TNT soap opera, "Dallas", portrayed by Brenda Strong.
 She made her first appearance during the episode broadcast on June 13, 2012.
 Strong's casting was announced on April 5, 2011.
 Ann is the third wife of Bobby Ewing (Patrick Duffy).
 The couple married in 2005 and Ann has become the matriarch of Southfork Ranch.
 She is protective of her stepson and loyal to her family.
Texas Music Revolution is a Texas Country Music festival that began in 1997 and has been running for the past 14 years.
 The festival is hosted by KHYI-95.3 FM The Range, and sponsored by many local Dallas/Ft. Worth businesses including Shiner Bock.
 The festival is traditionally (for the past 12 years) located at Southfork Ranch in Parker, TX.
Dallas is an American prime time television soap opera that aired on CBS from April 2, 1978, to May 3, 1991.
 The series revolves around a wealthy and feuding Texas family, the Ewings, who own the independent oil company Ewing Oil and the cattle-ranching land of Southfork.
 The series originally focused on the marriage of Bobby Ewing and Pamela Barnes, whose families were sworn enemies with each other.
 As the series progressed, oil tycoon J. R. Ewing became the show's breakout character, whose schemes and dirty business became the show's trademark.
 When the show ended in May 1991, J.R. was the only character to have appeared in every episode.
Southfork Ranch is a conference and event center in Parker, Texas, in the United States, about 25 mi north of Dallas.
 The ranch includes the Ewing Mansion, which was the setting for both "Dallas" television series: the original, which first aired on CBS from 1978 to 1991 (except for the first five episodes which were at Cloyce Box Ranch), and its continuation, first transmitted on TNT from 2012 to 2014.
The Ewing family is the core family of the American prime time soap opera "Dallas" and its 2012 revival, as well as the foundation of the spin-off series "Knots Landing".
 In the original series of "Dallas", the Ewings owned and ran Southfork Ranch and the oil giant Ewing Oil; in the revival series, Ewing Oil is replaced by Ewing Global, formerly Ewing Energies.
 "Knots Landing" featured the large corporation of Gary Ewing Enterprises.