Question: The actress who played Margaret in The Wars of the Roses was of what nationality?

full_context: Document 1: Wars of the Roses: The Wars of the Roses were a series of wars for control of the throne of England fought between supporters of two rival branches of the royal House of Plantagenet: the House of Lancaster (associated with a red rose), and the House of York (whose symbol was a white rose). The conflict lasted through many sporadic episodes between 1455 and 1487; however, there was fighting before and after this period between the houses. The power struggle ignited around social and financial troubles following the Hundred Years' War, combined with the mental infirmity and weak rule of Henry VI which revived interest in Richard of York's claim to the throne. Historians disagree about whether the Wars of the Roses were caused by the structural problems of feudalism or Henry VI's ineffectiveness as king.
Document 2: Henry VI, Part 1: Henry VI, Part 1, often referred to as 1 Henry VI, is a history play by William Shakespeare, and possibly Christopher Marlowe and/or Thomas Nashe, believed to have been written in 1591 and set during the lifetime of King Henry VI of England. Whereas "Henry VI, Part 2" deals with the King's inability to quell the bickering of his nobles, and the inevitability of armed conflict, and "Henry VI, Part 3" deals with the horrors of that conflict, "Henry VI, Part 1" deals with the and the political machinations leading up to the Wars of the Roses, as the English political system is torn apart by personal squabbles and petty jealousy.
Document 3: Patrick Stewart: Sir Patrick Stewart {'1': ", '2': ", '3': ", '4': "} (born 13 July 1940) is an English actor whose career has included roles on stage, television, and film in a career spanning almost six decades. He is a multiple time Olivier, Golden Globe, Emmy, Screen Actors Guild and Saturn Award nominee.
Document 4: The Wars of the Roses (adaptation): The Wars of the Roses was a 1963 theatrical adaptation of William Shakespeare's first historical tetralogy ("1 Henry VI", "2 Henry VI", "3 Henry VI" and "Richard III"), which deals with the conflict between the House of Lancaster and the House of York over the throne of England, a conflict known as the Wars of the Roses. The plays were adapted by John Barton, and directed by Barton himself and Peter Hall at the Royal Shakespeare Theatre. The production starred David Warner as Henry VI, Peggy Ashcroft as Margaret of Anjou, Donald Sinden as the Duke of York, Paul Hardwick as the Duke of Gloucester, Janet Suzman as Joan la Pucelle, Brewster Mason as the Earl of Warwick, Roy Dotrice as Edward IV, Susan Engel as Queen Elizabeth and Ian Holm as Richard III.
Document 5: Elizabeth Taylor: Dame Elizabeth Rosemond Taylor, DBE (February 27, 1932 – March 23, 2011) was a British-American actress, businesswoman, and humanitarian. She began her career as a child actress in the early 1940s, and was one of the most popular stars of classical Hollywood cinema in the 1950s. She continued her career successfully into the 1960s, and remained a well known public figure for the rest of her life. In 1999, the American Film Institute named her the seventh-greatest female screen legend.
Document 6: Richard III of England: Richard III (2 October 1452 – 22 August 1485) was King of England from 1483 until his death in 1485, at the age of 32, in the Battle of Bosworth Field. He was the last king of the House of York and the last of the Plantagenet dynasty. His defeat at Bosworth Field, the last decisive battle of the Wars of the Roses, marked the end of the Middle Ages in England. He is the subject of the historical play "Richard III" by William Shakespeare.
Document 7: Ethel Barrymore: Ethel Barrymore (born Ethel Mae Blythe; August 15, 1879 – June 18, 1959) was an American actress and a member of the Barrymore family of actors. Barrymore was a preeminent stage actress regarded as "The First Lady of the American Theatre" whose career spanned six decades.
Document 8: Joan Plowright: Joan Ann Plowright, Baroness Olivier, DBE (born 28 October 1929), commonly known as Dame Joan Plowright, is an English retired actress whose career has spanned over six decades. She has won two Golden Globe Awards and a Tony Award and has been nominated for an Academy Award, an Emmy and two BAFTA Awards. She is also one of only four actresses to have won two Golden Globes in the same year.
Document 9: Richard III (play): Richard III is a historical play by William Shakespeare believed to have been written in approximately 1592. It depicts the Machiavellian rise to power and subsequent short reign of King Richard III of England. The play is grouped among the histories in the First Folio and is most often classified as such. Occasionally, however, as in the quarto edition, it is termed a tragedy. "Richard III" concludes Shakespeare's first tetralogy (also containing "Henry VI" parts 1–3).
Document 10: Helen Mirren: Dame Helen Lydia Mirren, {'1': ", '2': ", '3': ", '4': "} ("née" Mironoff; born 26 July 1945) is an English actor. Mirren began her acting career with the Royal Shakespeare Company in 1967, and is one of the few performers who have achieved the Triple Crown of Acting, having won the Academy Award for Best Actress in 2007, after two previous nominations, for her performance as Queen Elizabeth II in "The Queen". She received an Olivier Award for Best Actress in 2013 for her West End performance in "The Audience", in which she also portrayed Elizabeth II, and in 2015 she won the Tony Award for Best Actress in a Play for her Broadway performance in the play. "The Audience" was written by Peter Morgan, who also wrote "The Queen". Mirren won three consecutive BAFTA Awards for Best Actress between 1992 and 1994 and her first of several Emmy Awards in 1996 for her performance as police detective Jane Tennison on the British television series "Prime Suspect", which ran for seven seasons between 1991 and 2006.
Document 11: Ricardian (Richard III): Ricardians are people interested in altering the posthumous reputation of Richard III, King of England (reigned 1483–1485). Richard III has long been portrayed unfavourably, most notably in William Shakespeare's play "Richard III", in which Richard is portrayed as having murdered his nephew, the crown prince of England, a 12 year old child at the time, in order to secure the English throne for himself. Ricardians have worked in an effort to turn this around and to paint this portrayal, and the many other related assertions that followed, as most probably false politically motivated accusations.
Document 12: Shakespearean history: In the First Folio, the plays of William Shakespeare were grouped into three categories: comedies, histories, and tragedies. The histories—along with those of contemporary Renaissance playwrights—help define the genre of history plays. The histories might be more accurately called the "English history plays" and include the outliers "King John" and "Henry VIII" as well as a continuous sequence of eight plays covering the Wars of the Roses. These last are considered to have been composed in two cycles. The so-called first tetralogy, apparently written in the early 1590s, deals with the later part of the struggle and includes "Henry VI, parts one", "two" & "three" and "Richard III". The second tetralogy, finished in 1599 and including "Richard II", "Henry IV, Part 1", "Henry IV, Part 2" and "Henry V", is frequently called the "Henriad" after its protagonist Prince Hal, the future Henry V.
Document 13: Richard III (1995 film): Richard III is a 1995 British drama film adapted from William Shakespeare's play of the same name, starring Ian McKellen, Annette Bening, Jim Broadbent, Robert Downey Jr., Nigel Hawthorne, Kristin Scott Thomas, Maggie Smith, John Wood, and Dominic West. The film sets the play in a fictional fascist version of 1930s Britain.
Document 14: Peggy Ashcroft: Dame Edith Margaret Emily Ashcroft, DBE (22 December 1907 – 14 June 1991), commonly known as Peggy Ashcroft, was an English actress whose career spanned more than sixty years.
Document 15: Peggy Ashcroft: Dame Edith Margaret Emily Ashcroft, DBE (22 December 1907 – 14 June 1991), commonly known as Peggy Ashcroft, was an English actress whose career spanned more than sixty years.
ground_truth: English