Question: What is the nationality of the actor that played Young Tom Morris in a 2016 historical drama film?

Context articles: Young Tom Morris
Jack Huston
The Death of Louis XIV
1873 Open Championship
Siddharth Nigam
Tommy's Honour
Denial (2016 film)
Old Tom Morris
John McDermott (golfer)
Jack Lowden

Thomas Morris (20 April 1851 – 25 December 1875), known as Young Tom Morris, was a Scottish professional golfer.
 He is considered one of the pioneers of professional golf, and was the first young prodigy in golf history.
 He won four consecutive titles in the Open Championship, an unmatched feat, and did this by the age of 21.
Jack Alexander Huston (born 7 December 1982) is an English actor.
 He appeared as Richard Harrow in the HBO television drama series "Boardwalk Empire".
 He also had a supporting role in the 2013 film "American Hustle", and played the titular "Ben-Hur" in the 2016 historical drama.
The Death of Louis XIV (French: La Mort de Louis XIV ) is a 2016 historical drama film written and directed by Albert Serra and starring Jean-Pierre Léaud as King Louis XIV.
 The film was screened out of competition at the 2016 Cannes Film Festival.
 It made its North American premiere at the 2016 Toronto International Film Festival and its U.S. premiere at the 54th New York Film Festival.
The 1873 Open Championship was the 13th Open Championship, held 4 October at the Old Course at St Andrews, Fife, Scotland.
 Tom Kidd won the Championship by a stroke from Jamie Anderson.
 This was the first Open Championship not held at Prestwick.
 The Championship was still contested over 36 holes; now two rounds of 18 holes rather than three rounds of 12.
 Since the new "Champion Trophy" (commonly known as the Claret Jug) was not ready in 1872, Kidd became the first golfer to receive it at the Championship.
 "The trophy conferred on the successful golfer is a "silver cup" which, however, can never become the absolute property of any winner (as was the case with the "champion belt" which fell to Young Tom Morris, who won it three times in succession).
 Along with the honour the winner receives a medal and likewise a money prize."
Siddharth Nigam is an Indian teen actor, who works in Indian television and films and is known for his roles in the film "Dhoom 3" (2013) and historical drama television show "Chakravartin Ashoka Samrat" where he played young emperor Ashoka.
Tommy's Honour is a 2016 historical drama film depicting the lives and careers of, and the complex relationship between, the pioneering Scottish golfing champions Old Tom Morris and his son Young Tom Morris.
 The film is directed by Jason Connery, and the father and son are portrayed by Peter Mullan and Jack Lowden.
 The film won Best Feature Film at the 2016 British Academy Scotland Awards.
Denial is a 2016 historical drama film directed by Mick Jackson and written by David Hare, based on Deborah Lipstadt's book "History on Trial: My Day in Court with a Holocaust Denier."
 It dramatises the "Irving v Penguin Books Ltd" case, in which Lipstadt, a Holocaust scholar, was sued by Holocaust denier David Irving for libel.
 It stars Rachel Weisz, Tom Wilkinson, Timothy Spall, Andrew Scott, Jack Lowden, Caren Pistorius and Alex Jennings.
Thomas Mitchell Morris (16 June 1821 – 24 May 1908), otherwise known as Old Tom Morris, was a Scottish golfer.
 He was born in St Andrews, Fife, the "home of golf" and location of the St Andrews Links, and died there as well.
 Young Tom Morris (died 1875), also a golfer, was his son.
John J. McDermott Jr. (August 12, 1891 – August 1, 1971) was the first U.S.-born golfer to win the U.S. Open, in 1911 and 1912, and he remains the youngest player to win the event, at age 19, as well as the second youngest to win any of golf's four major tournaments after Young Tom Morris.
 He was the first player to break par over 72 holes in a significant event, which he did at the 1912 U.S. Open.
 He was one of the world's top players between 1910 and 1914.
Jack Andrew Lowden (born 2 June 1990) is a Scottish stage, television, and film actor.
 Following a highly successful and award-winning four-year stage career, his first major international onscreen success was in the 2016 BBC miniseries "War & Peace", which led to starring roles in feature films.