Question: When was the English actor who was one of the trio with John Gielgud and Ralph Richardson born? 

Context articles: Laurence Olivier on stage and screen
Ralph Richardson
Charles Richardson (cement merchant)
John Gielgud
Oh! What a Lovely War
Laurence Olivier
Maina Gielgud
Harcourt Williams
N. C. Hunter
Ralph Richardson, roles and awards

Laurence Olivier (1907–1989) was an English actor who, along with his contemporaries Ralph Richardson and John Gielgud, dominated the British stage of the mid-20th century.
 He also worked in films throughout his career, playing more than fifty cinema roles.
 From 1935 he performed in radio broadcasts and, from 1956, had considerable success in television roles.
Sir Ralph David Richardson (19 December 1902 – 10 October 1983) was an English actor who, along with his contemporaries John Gielgud and Laurence Olivier, dominated the British stage of the mid-20th century.
 He worked in films throughout most of his career, and played more than sixty cinema roles.
 From an artistic but not theatrical background, Richardson had had no thought of a stage career until a production of "Hamlet" in Brighton inspired him to become an actor.
 He learned his craft in the 1920s with a touring company and later the Birmingham Repertory Theatre.
 In 1931 he joined the Old Vic, playing mostly Shakespearean roles.
 He led the company the following season, succeeding Gielgud, who had taught him much about stage technique.
 After he left the company, a series of leading roles took him to stardom in the West End and on Broadway.
Charles Richardson (born 16 February 1817 at Woodford, Essex, United Kingdom: died 30 January 1890 at Newton Abbot, Devon) was the founder of the family Brick and Cement Firm A & WT Richardson Ltd, which lasted over 100 years.
 On 18 October 1840 he married Selina Ellis at Lambeth.
 The couple had one daughter, Selina Richardson born March 1842 and four sons - Alexander R Richardson born 1847, Walter T Richardson born 1849, Frederick Charles Richardson born 1851 and George Canning Richardson born March 1855.
Sir Arthur John Gielgud ( ; 14 April 1904 – 21 May 2000) was an English actor and theatre director whose career spanned eight decades.
 With Ralph Richardson and Laurence Olivier, he was one of the trio of actors who dominated the British stage for much of the 20th century.
 A member of the Terry family theatrical dynasty, he gained his first paid acting work as a junior member of his cousin Phyllis Neilson-Terry's company in 1922.
 After studying at the Royal Academy of Dramatic Art he worked in repertory theatre and in the West End before establishing himself at the Old Vic as an exponent of Shakespeare in 1929–31.
Oh!
 What a Lovely War is a 1969 British comedy musical film directed by Richard Attenborough (in his directorial debut), with an ensemble cast including Maggie Smith, Dirk Bogarde, John Gielgud, John Mills, Kenneth More, Laurence Olivier, Jack Hawkins, Corin Redgrave, Michael Redgrave, Vanessa Redgrave, Ralph Richardson, Ian Holm, Paul Shelley, Malcolm McFee, Jean-Pierre Cassel, Nanette Newman, Edward Fox, Susannah York, John Clements, Phyllis Calvert and Maurice Roëves.
Laurence Kerr Olivier, Baron Olivier, {'1': ", '2': ", '3': ", '4': "} ( ; 22 May 1907 – 11 July 1989) was an English actor and director who, along with his contemporaries Ralph Richardson and John Gielgud, dominated the British stage of the mid-20th century.
 He also worked in films throughout his career, playing more than fifty cinema roles.
 Late in his career, he had considerable success in television roles.
Maina Gielgud {'1': ", '2': ", '3': ", '4': "} (born London; 14 January 1945) is a former British ballet dancer and a veteran ballet administrator.
 She was artistic director of the Australian Ballet from 1983 to 1996 and is that company's longest serving director to date.
 She had a twenty-year career as a dancer in Europe and the United Kingdom.
 Gielgud directed the Royal Danish Ballet between 1997 and 1999.
 Until 2005, she held the artistic associate position at the Houston Ballet.
 She is a daughter of Lewis Gielgud and actress Zita Gordon and niece of actor John Gielgud.
Ernest George Harcourt Williams (30 March 1880 – 13 December 1957) was an English actor and director.
 After early experience in touring companies he established himself as a character actor and director in the West End.
 From 1929 to 1934 he was director of The Old Vic theatre company; among the actors he recruited were John Gielgud and Ralph Richardson.
 After directing some fifty plays he resigned the directorship of the Old Vic but continued to appear in the company's productions throughout the rest of his career.
 He appeared in thirty cinema and television roles during his later years.
Norman Charles Hunter, (18 September 190819 April 1971) was a British playwright whose plays attracted such notable actors to perform them as John Gielgud, Wendy Hiller, Sybil Thorndike, Ralph Richardson, Vanessa Redgrave, Michael Redgrave, and Ingrid Bergman.
 His play "A Picture of Autumn" was revived off-Broadway by the Mint Theater Company in 2013.
 Hunter's play "A Day by the Sea" will be revived off-Broadway by the Mint Theater Company in 2016.
Sir Ralph Richardson (1902–1983) was an English actor who appeared on radio, film, television and stage.
 Described by "The Guardian" as "indisputably our most poetic actor", and by the director David Ayliff as "a natural actor ... [who] couldn't stop being a perfect actor", Richardson's career lasted over 50 years.
 He was—in the words of his biographer, Sheridan Morley—one "of the three great actor knights of the mid-twentieth century", alongside Laurence Olivier and John Gielgud.