Question: Who wrote the memoir from which the 2014 British biographical romantic drama starring English actor  Vincenzo Leonardo "Enzo" Cilenti was adapted?

Context articles: The Great White Hope (film)
Becoming Jane
Maudie (film)
A United Kingdom
The Theory of Everything (2014 film)
Hammers Over the Anvil
Tom Cruise filmography
Nirakazhcha
Desert Dancer
Enzo Cilenti

The Great White Hope is a 1970 biographical romantic drama film written and adapted from the Howard Sackler play of the same name.
Becoming Jane is a 2007 British-Irish biographical romantic drama film directed by Julian Jarrold.
 It depicts the early life of the English author Jane Austen and her lasting love for Thomas Langlois Lefroy.
 American actress Anne Hathaway stars as the title character, while her romantic interest is played by Scottish actor James McAvoy.
 Also appearing in the film are Julie Walters, James Cromwell and Maggie Smith.
 The film was produced in cooperation with several companies, including Ecosse Films and Blueprint Pictures.
 It also received funding from the Irish Film Board and the UK Film Council Premiere Fund.
Maudie is a 2016 biographical romantic drama film directed by Aisling Walsh and starring Sally Hawkins and Ethan Hawke.
 A co-production of Ireland and Canada, the film is about the life of artist Maud Lewis, who painted in Nova Scotia.
 It was shot in Newfoundland and Labrador, requiring a recreation of Lewis's famously small house.
A United Kingdom is a 2016 British biographical romantic drama film directed by Amma Asante and written by Guy Hibbert, based on the true-life romance between Sir Seretse Khama and his wife Ruth Williams Khama.
 David Oyelowo and Rosamund Pike portray Seretse and Ruth, respectively.
The Theory of Everything is a 2014 British biographical romantic drama film directed by James Marsh and adapted by Anthony McCarten from the memoir "Travelling to Infinity: My Life with Stephen" by Jane Wilde Hawking, which deals with her relationship with her ex-husband, theoretical physicist Stephen Hawking, his diagnosis of amyotrophic lateral sclerosis (ALS, also known as Lou Gehrig's disease or motor neurone disease), and his success in physics.
Hammers Over the Anvil is a 1993 Australian biographical romantic drama film starring Russell Crowe and directed by Ann Turner.
 The screenplay was written by Peter Hepworth and Ann Turner.
 The film is loosely based on the novel by Alan Marshall.
 The original music score is composed by Not Drowning, Waving.
Tom Cruise is an American actor and producer who made his film debut with a minor role in the 1981 romantic drama "Endless Love".
 Two years later he made his breakthrough by starring in the romantic comedy "Risky Business" (1983), which garnered Cruise his first nomination for the Golden Globe Award for Best Actor – Motion Picture Musical or Comedy.
 In 1986, Cruise played a fighter pilot in the Tony Scott-directed action drama "Top Gun" (the highest-grossing film that year), and also starred opposite Paul Newman in the Martin Scorsese-directed drama "The Color of Money".
 Two years later he played opposite Dustin Hoffman in the Academy Award for Best Picture-winning drama "Rain Man" (1988), and also appeared in the Golden Raspberry Award for Worst Picture-winning romantic drama "Cocktail" (1988).
 In doing so Cruise became the first and only person as of 2014 to star in a Best Picture Oscar winner and a Worst Picture Razzie winner in the same year.
 His next role was as anti-war activist Ron Kovic in the drama adaptation of Kovic's memoir of the same name, "Born on the Fourth of July" (1989).
 For his performance Cruise received the Golden Globe Award for Best Actor – Motion Picture Drama and his first nomination for the Academy Award for Best Actor.
Nirakazhcha is a 2010 Malayalam film directed by debutant Anish J. Karrinad starring Italian actor Vincenzo Bocciarelli, Mamta Mohandas and Manoj K. Jayan in the lead roles.
Desert Dancer is a 2014 British biographical drama film directed by Richard Raymond and written by Jon Croker.
 Starring Reece Ritchie and Freida Pinto, the film is based on the true story of Afshin Ghaffarian, a young, self-taught dancer in Iran, who risked his life for his dream to become a dancer despite a nationwide dancing ban.
Vincenzo Leonardo "Enzo" Cilenti (born 8 August 1974) is an English actor, known for his roles in works such as "The Theory of Everything", "Guardians of the Galaxy", "Jonathan Strange & Mr Norrell", and "Game of Thrones".