Question: Which is Irish Michael Gambon or Viceroy's House? 

Context paragraphs:
The Actors: The Actors is a 2003 film written and directed by Conor McPherson and starring Dylan Moran and Michael Caine.  In supporting roles are Michael Gambon, Miranda Richardson and Lena Headey.

Gosford Park: Gosford Park is a 2001 British mystery film directed by Robert Altman and written by Julian Fellowes.  The film stars an ensemble cast, which includes Eileen Atkins, Bob Balaban, Alan Bates, Charles Dance, Stephen Fry, Michael Gambon, Richard E. Grant, Derek Jacobi, Kelly Macdonald, Helen Mirren, Jeremy Northam, Clive Owen, Ryan Phillippe, Maggie Smith, Kristin Scott Thomas, and Emily Watson.  The story follows a party of wealthy Britons and an American, and their servants, who gather for a shooting weekend at Gosford Park, an English country house.  A murder occurs after a dinner party, and the film goes on to present the subsequent investigation from the servants' and guests' perspectives.

Viceroy's House (film): Viceroy's House is British-Indian historical drama film directed by Gurinder Chadha and written by Paul Mayeda Berges, Moira Buffini, and Chadha.  The film stars Hugh Bonneville, Gillian Anderson, Manish Dayal, Huma Qureshi, and Michael Gambon.  It has been selected to be screened out of competition at the 67th Berlin International Film Festival.

Open Range (2003 film): Open Range is a 2003 American western film directed and co-produced by Kevin Costner, starring Robert Duvall and Costner, with Annette Bening, Michael Gambon, and Michael Jeter appearing in supporting roles.  The film was the final on-screen appearance of Jeter, who died before it was released, and the film was dedicated to Jeter's memory, and to that of Costner's parents, Bill and Sharon.

Mobsters: Mobsters is a 1991 American crime film directed by Michael Karbelnikoff.  It details the creation of The Commission.  Set in New York City, taking place from 1917 to 1931, it is a semi-fictitious account of the rise of Charles "Lucky" Luciano, Meyer Lansky, Frank Costello, and Benjamin "Bugsy" Siegel.  The film stars Christian Slater as Luciano, Patrick Dempsey as Lansky, Costas Mandylor as Costello and Richard Grieco as Siegel, with Michael Gambon, Anthony Quinn, Lara Flynn Boyle, and F. Murray Abraham in supporting roles.

Elizabeth Counsell: Elizabeth Counsell (born June 7, 1942) is an English actress, best known for starring in the BBC television series "Brush Strokes", and for her work in classical theatre.  She played Lady Macbeth to Michael Gambon's Macbeth at the Forum Theatre in 1968, and was Michael Redgrave's leading lady in his anthology "Shakespeare's People", 1976-77.  In 1983 she took the nominal part in Peter Hall's Jean Seberg (musical) at the Royal National Theatre.  Her film career includes roles in "Hot Millions" (1968), "Anne of the Thousand Days" (1969), "Under the Doctor" (1976), "Killer's Moon" (1978), and "Claudia" (1985).  Her most recent film appearances include the 2012 film "Song for Marion" with Vanessa Redgrave, and the 2014 film "Grace of Monaco" starring Nicole Kidman.

The Beast Must Die (1974 film): The Beast Must Die is a 1974 horror film directed by Paul Annett.  The screenplay was written by Michael Winder, based on the short story "There Shall Be No Darkness" by James Blish which was originally published in Thrilling Wonder Stories.  The film starred Calvin Lockhart, Peter Cushing, Marlene Clark, Michael Gambon, Charles Gray, Anton Diffring, Ciaran Madden, and Tom Chadbon.

The Insider (film): The Insider is a 1999 American drama film directed by Michael Mann, from a script adapted by Eric Roth and Mann from Marie Brenner's "Vanity Fair" article "The Man Who Knew Too Much".  The film stars Al Pacino and Russell Crowe, with supporting actors including Christopher Plummer, Bruce McGill, Diane Venora and Michael Gambon.

Michael Gambon: Sir Michael John Gambon {'1': ", '2': ", '3': ", '4': "} (born 19 October 1940) is an Irish-born English actor who has worked in theatre, television and film.  Gambon has played the eponymous mystery writer protagonist in the BBC television serial "The Singing Detective", Jules Maigret in the 1990s ITV serial "Maigret", and Professor Albus Dumbledore in the final six "Harry Potter" films after the death of previous actor Richard Harris.  He has won four BAFTA TV Awards and three Olivier Awards.

Otherwise Engaged: Otherwise Engaged is a bleakly comic play by English playwright Simon Gray.  The play previewed at the Oxford Playhouse and the Richmond Theatre, and then opened at the Queen's Theatre in London on 10 July 1975, with Alan Bates as the star and Harold Pinter as director, produced by Michael Codron.  Ian Charleson co-starred as Dave, a Glasgow lout.  Michael Gambon took over from Bates in 1976, "playing it for a year, eight times a week."  The play also had a successful run on Broadway, opening in February 1977 with Tom Courtenay as Simon and Carolyn Lagerfelt as Beth.  It won the New York Drama Critics' Circle Award for Best Play.

Supporting paragraphs: Viceroy's House (film) Michael Gambon
Answer: Michael Gambon