Dead Man's Land is a book by Robert Ryan, based in World War I.
 It involves Sherlock Holmes' sidekick, Dr. Watson (created by Arthur Conan Doyle).
 It is fully authorized by Conan Doyle Estate Ltd. "Dead Man' Land" has been written under license from the Sir Arthur Conan Doyle literary Estate
The Return of Sherlock Holmes is a 1929 American Pre-Code mystery film directed by Basil Dean and written by Arthur Conan Doyle, Basil Dean and Garrett Fort.
 The film shares its title with the third volume of the Sherlock Holmes stories, "The Return of Sherlock Holmes" by Arthur Conan Doyle.
 The film stars Clive Brook, H. Reeves-Smith, Betty Lawford, Charles Hay and Phillips Holmes.
 The film was released October 29, 1929, by Paramount Pictures.
 A copy is held at the Library of Congress.
Sherlock Holmes is a 1916 American silent film starring William Gillette as Arthur Conan Doyle's Sherlock Holmes.
 The film, which was directed by Arthur Berthelet, was produced by Essanay Studios in Chicago.
 It was adapted from the 1899 stage play of the same name, which was based on the stories, "A Scandal in Bohemia," "The Final Problem," and "A Study in Scarlet" by Arthur Conan Doyle.
Sir Arthur Conan Doyle's Sherlock Holmes, also known simply as Sherlock Holmes, is a British-American 2010 steampunk mystery film directed by Rachel Lee Goldenberg and produced by independent American film studio The Asylum.
 It features the Sherlock Holmes characters created by Sir Arthur Conan Doyle, though it follows an original plot.
 The film details an unrecorded case in which eccentric detective Holmes and his companion Dr. Watson investigate a series of unusual monster attacks and a plot to destroy London.
 Gareth David-Lloyd plays Dr. John Watson and Ben Syder, making his film debut, plays Sherlock Holmes.
Sir Arthur Conan Doyle's The Lost World is a syndicated television series loosely based on the 1912 novel by Sir Arthur Conan Doyle, "The Lost World".
 The show premiered in the United States in the fall of 1999 (after the TV-movie/pilot aired in February on DirecTV and then on the cable television channel TNT in April), it ran for three seasons before it was cancelled on a cliffhanger in 2002 after funding for a fourth season fell through.
 To this day, the cliffhanger remains unresolved.
 All three seasons were released in DVD box sets in 2004.
Adrian Malcolm Conan Doyle (19 November 19103 June 1970) was the youngest son of Sir Arthur Conan Doyle and his second wife Jean, Lady Doyle or Lady Conan Doyle.
 He had two siblings, sister Jean and brother Denis, as well as two half-siblings, sister Mary and brother Kingsley.
Philip Michael Ondaatje, {'1': ", '2': ", '3': ", '4': "} ( ; born 12 September 1943), is a Sri Lankan-born Canadian poet, novelist, editor and filmmaker.
 He is the recipient of multiple literary awards such as the Governor General's Award, the Giller Prize, the Booker Prize, and the Prix Médicis étranger.
 Ondaatje is also an Officer of the Order of Canada, recognizing him as one of Canada's most renowned living authors.
Sir Arthur Ignatius Conan Doyle KStJ, DL (22 May 1859 – 7 July 1930) was a British writer best known for his detective fiction featuring the character Sherlock Holmes.
 Originally a physician, in 1887 he published "A Study in Scarlet", the first of four novels about Holmes and Dr. Watson.
 In addition, Doyle wrote over fifty short stories featuring the famous detective.
"The Adventure of the Empty House", one of the 56 Sherlock Holmes short stories written by British author Sir Arthur Conan Doyle, is one of 13 stories in the cycle collected as "The Return of Sherlock Holmes".
 Public pressure forced Conan Doyle to bring the sleuth back to life, and explain his apparently miraculous survival of a deadly struggle with Professor Moriarty.
 Doyle ranked "The Adventure of the Empty House" sixth in his list of his twelve favorite Holmes stories.
Grant Duff Douglas Ainslie (1865–27 March 1948) was a Scottish poet, translator, critic and diplomat.
 He was born in Paris, France, and educated at Eton College and at Balliol and Exeter Colleges, Oxford.
 A contributor to the Yellow Book, he met and befriended Oscar Wilde at age twenty-one while an undergraduate at Oxford.
 He was also associated with other such notable figures as Aubrey Beardsley, Walter Pater and Marcel Proust.
 The first translator of the Italian philosopher Benedetto Croce into English, he also lectured on Hegel.
 He was identified as the "Dear Ainslie" recipient of twelve letters written by Arthur Conan Doyle in 1895 - 1896, which were auctioned by Christie's in 2004.
 (http://www.bestofsherlock.com/ref/200405christies_lots.htm) See "The Identification of Ainslie" by Al Dawson in "The Magic Door", v. 14, no. 2 (Summer 2012), pp. 1,6,7 - a publication of The Friends of the Arthur Conan Doyle Collection, Toronto Public Libraries.

Question: Do Michael Ondaatje and Arthur Conan Doyle have the same nationality ?
Answer: no