The Foreigner is an upcoming English-language action thriller film film directed by Martin Campbell and written by David Marconi, based on the 1992 novel "The Chinaman" by Stephen Leather.
 The British-Chinese co-production stars Jackie Chan, Pierce Brosnan, Charlie Murphy, Michael McElhatton, Orla Brady, Liu Tao and Katie Leung.
 It is scheduled for release in China on 30 September 2017 and in the United States on 13 October 2017.
Dolly Ahluwalia is an Indian actress and costume designer who was awarded the Sangeet Natak Akademi Award in 2001 for costume design.
 She has won the National Film Award thrice, twice for Best Costume Design for "Bandit Queen" (1993) and "Haider" (2014), and then as Best Supporting Actress for "Vicky Donor" (2012), which is also her best known role as an actor.
Ethel Muriel Ashton AM (11 November 190321 October 1999), known professionally as Queenie Ashton, was an English-born character actress and comedian.
 She had a long career, beginning in her native England as a soprano and theatre performer, before immigrating to Australia where she became best known for her radio and television soap opera roles, although she did also feature briefly in film's.
 Ashton's best known role played was of "Granny Bishop" a character many years her senior in the long-running Gwen Meredith radio serial "Blue Hills, a role she would later reprise for television, with the first locally produced soap opera Autumn Affair
Susan Mary Theresa Fitzgerald (28 May 1949 – 9 September 2013) was an Irish actress, best known for her work in television and her work in Irish theatre.
 She also played the role of May in Samuel Beckett's "Footfalls" for the Gate Theatre's "Beckett on Film" project.
 At her death she was hailed as "one of Ireland's best known stage actresses" and "the pre-eminent stage actress of her generation and beloved of theatre audiences."
Marion Ross (born October 25, 1928) is an American actress.
 Her best known role is that of Marion Cunningham on the ABC television sitcom "Happy Days", on which she starred from 1974 to 1984 and received two Primetime Emmy Award nominations.
 Before her success on "Happy Days", Ross appeared in a variety of film roles, appearing in "The Glenn Miller Story" (1954), "Sabrina" (1954), "Lust for Life" (1956), "Teacher's Pet" (1958), "Some Came Running" (1958), "Operation Petticoat" (1959), and "Honky" (1971), as well as several minor television roles, one of which was on television’s "The Lone Ranger" (1954).
 Ross also starred in "The Evening Star" (1996), for which she was nominated for the Golden Globe Award for Best Supporting Actress.
Charlotte "Charlie" Murphy (born 19 April 1988) is an Irish actress.
 She is best known for playing the lead role of Siobhan Delaney in the hit RTÉ drama "Love/Hate" for which she won the 2013 Irish Film and Television Award for Best TV Actress, and as Ann Gallagher in the acclaimed BBC One drama "Happy Valley".
 She will next be appearing in the BBC One historical crime drama television series "Peaky Blinders".
Sarah Greene (born 21 July 1984) is an Irish actress and singer, best known for portraying Helen McCormick in the West End and Broadway productions of "The Cripple of Inishmaan".
 For her performance in the role, she was nominated for the 2014 Laurence Olivier Award for Best Actress in a Supporting Role, and the 2014 Tony Award for Best Featured Actress in a Play.
 She starred as Hecate Poole in the Showtime and Sky series "Penny Dreadful".
Susan Patricia Loughnane (born 16 February 1987) is an Irish actress, and author.
 She is best known for playing the lead role of Debbie in the hit RTÉ drama "Love/Hate" opposite Aidan Gillen, for which she won the 2013 Irish Film and Television Award for Best Supporting Actress.
 Her first fiction novel 'The Art of Scandal' was published by Poolbeg Press in October 2014.
Beverlee McKinsey (August 9, 1935 – May 2, 2008) was an American actress.
 She is best known for her roles on two daytime serials.
 Her first known role was as Iris Cory Carrington on the soap opera "Another World" from 1972 to 1980.
 Subsequently, she portrayed the same role until November 1981 on the spin-off show "Texas".
 Her other famous role was as the Baroness Alexandra Spaulding Von Halkein, on the soap opera "Guiding Light", from 1984 to 1992.
 In 1994, she made a brief return to daytime, appearing in 6 episodes of "General Hospital" as Myrna Slaughter, a witness in Edward Quartermain's trial for the murder of Jack Boland.
Isabella Castillo Díaz (born 23 December 1994), best known by her stage name Isabella Castillo, is a singer and actress born in Havana, Cuba.
 Her best known role is that of Graciela "Grachi" Alonso, main character of the Nickelodeon Latin America's series "Grachi", for which has released several songs.

Question: What is the best known role of the Irish actress who stars in The Foreigner?
Answer: Siobhan Delaney