Question: What is the birthyear of the last born player to cross the Old Firm divide twice?

Context paragraphs:
Emilia Nyström: Emilia Nyström (born 13 September 1983) is a professional Finnish beach volleyball player together with her twin sister, Erika.  She stands 1.77 m tall and weighs 53 kg.  Emilia is the last born of the identical twins and they are both from Muurame, Finland.

Ray Borner: Ray Helmut Borner (born 27 May 1962) is an Australian former basketball player who competed in the National Basketball League.  He was named as the NBL's Most Valuable Player for the 1985 season, becoming the first Australian born player to win the award.

Alex Sharman: Alex Sharman (born in Tasmania, Australia) is an Australian Paraguayan retired rugby union player who played for the University of Sydney (NSW, Australia), Falkirk (Scotland), Hinckley and Clifton Rugby Clubs (England), St. Louis Ramblers (USA), Rugby La Vila (Spain), San Jose Rugby Club and CURDA (Paraguay) and the Paraguay national rugby union team.  Alex was the first Australian born player to represent Paraguay in rugby.

Tom Dunbar (footballer): Thomas Dunbar (18 August 1868 – 28 April 1908) was a Scottish association footballer who played for Celtic and Rangers.  He is one of only two players to cross the Old Firm divide twice, the other being Kenny Miller.

Jon DiSalvatore: Jonathan David DiSalvatore (born March 30, 1981 in Bangor, Maine and raised in Windsor, Connecticut) is an American former professional ice hockey player.  He was selected by the San Jose Sharks in the 4th round (104th overall) of the 2000 NHL Entry Draft.  DiSalvatore played five games in the National Hockey League with the St. Louis Blues during the 2005–06 NHL season and one game with the Minnesota Wild in the 2011–12 NHL season.  On December 11, 2015 DiSalvatore played in his 800th American Hockey League game, putting him 2nd all-time in AHL games played for a U.S born player.  On February 5, 2016 he played in his 900th professional game.

Dave Hynes: David E. Hynes (born April 17, 1951) is a retired professional ice hockey player who played 22 games in the National Hockey League for the Boston Bruins in 1973–75 as well as 22 games in the World Hockey Association for the New England Whalers in 1976–77.  He was also a member of the United States national team at the 1972, 1973 and 1977 Ice Hockey World Championship tournaments.  He was born in Cambridge, Massachusetts.  Hynes has the distinction of being the first American born player ever to be drafted by the Boston Bruins.  He was selected in the fourth round, 56th overall, by the Bruins in the 1971 NHL Amateur Draft.

Golden Triangle (Canada): The Golden Triangle is a major 330 km cycling route located in western Canada along the border between British Columbia and Alberta, forming a triangle with Lake Louise, Golden, BC and Radium, BC as its points.  It crosses the continental divide twice, through the Kicking Horse Pass between Lake Louise and Golden, and the Vermillion Pass between Radium and Lake Louise.  The Triangle can be "extended" by riding to Jasper on the Icefields Parkway from Lake Louise.

New Firm (Denmark): The Copenhagen Derby also called The New Firm is a Danish football rivalry between the two big teams, Brøndby IF and F.C. Copenhagen.  The New Firm name is a play on the Old Firm rivalry that exists between the two Scottish football teams, Rangers and Celtic.  The term "New Firm" is also used in Scotland to refer to two clubs from the east of Scotland, Aberdeen and Dundee United, due to their challenging the Old Firm's traditional dominance of the game in Scotland during the 1980s.

Kenny Miller: Kenneth Miller (born 23 December 1979) is a Scottish professional footballer who plays as a striker for Scottish Premiership club Rangers.  Miller is one of only five post-war players to have played for both Rangers and Celtic, and is only the second player to cross the divide twice, alongside Tom Dunbar.  He is known as a versatile and pacy striker who is skilled with headers and can play as a supporting or centre-forward.

Hamid Reza Pahlavi: Hamid Reza Pahlavi (4 July 1932 – 12 July 1992) was Reza Shah's eleventh and last born child, and a half-brother of Mohammad Reza Pahlavi, the last shah of Iran.

Supporting paragraphs: Tom Dunbar (footballer) Kenny Miller
Answer: 1979