Question: Is João Guimarães Rosa or Harry Stephen Keeler Brazilian?

Context articles: João Guimarães Rosa
Sing Sing Nights (film)
Harry Stephen Keeler
The Hour and Turn of Augusto Matraga
Aracy de Carvalho Guimarães Rosa
Sagarana: The Duel
Erico Verissimo
The Devil to Pay in the Backlands
The Third Bank of the River
The Mysterious Mr. Wong

João Guimarães Rosa (] ; 27 June 1908 – 19 November 1967) was a Brazilian novelist, short story writer and diplomat.
Sing Sing Nights is a 1934 American film directed by Lewis D. Collins, based on the 1927 novel by American Author Harry Stephen Keeler (Hutchinson 1927, Dutton 1928, Ward & Lock 1929).
Harry Stephen Keeler (November 3, 1890 – January 22, 1967) was a prolific but little-known American author of mysteries and science fiction.
The Hour and Turn of Augusto Matraga (Portuguese: A Hora e a Vez de Augusto Matraga ) is a 1965 Brazilian crime drama film directed by Roberto Santos, based on the short story of the same name by João Guimarães Rosa.
Aracy de Carvalho Guimarães Rosa (née Aracy Moebius de Carvalho) (December 5, 1908 – February 28, 2011) was a Brazilian diplomatic clerk who has been recognized with the title of Righteous Among the Nations.
Sagarana: The Duel (Portuguese: Sagarana, o Duelo ) is a 1973 Brazilian adventure drama film directed by Paulo Thiago, based on the short story "O Duelo" by João Guimarães Rosa.
 It was entered into the 24th Berlin International Film Festival.
Érico Lopes Veríssimo (December 17, 1905 – November 28, 1975) was an important Brazilian writer, born in the State of Rio Grande do Sul.
 His father, Sebastião Veríssimo da Fonseca, heir of a rich family in Cruz Alta, Rio Grande do Sul, met financial ruin during his son's youth.
 Veríssimo worked in a pharmacy before obtaining a job at Editora Globo, a book publisher, where he translated and released works of writers like Aldous Huxley.
 During the Second World War, he went to the United States.
 This period of his life was recorded in some of his books, including: "Gato Preto em Campo de Neve" ("Black Cat in a Snow Field"), "A Volta do Gato Preto" ("The Return of the Black Cat"), and "História da Literatura Brasileira" ("History of Brazilian Literature"), which contains some of his lectures at UCLA.
 His epic "O Tempo e o Vento" ("The Time and the Wind'") became one of the great masterpieces of the Brazilian novel, alongside "Os Sertões" by Euclides da Cunha, and "" by Guimarães Rosa.
Grande Sertão: Veredas (Portuguese for "Great Backlands: Paths"; English translation: The Devil to Pay in the Backlands) is a novel published in 1956 by the Brazilian writer João Guimarães Rosa.
The Third Bank of the River (Portuguese: A Terceira Margem do Rio ) is a 1994 Brazilian drama film directed by Nelson Pereira dos Santos.
 It is based on the short stories "A Menina de Lá", "Os Irmãos Dagobé", "Fatalidade", "Seqüência", and "A Terceira Margem do Rio" by João Guimarães Rosa compiled into the book "Primeiras Estórias".
 It was entered into the 44th Berlin International Film Festival.
The Mysterious Mr. Wong is a tongue-in-cheek 1934 mystery film starring Bela Lugosi as a powerful Fu Manchu type criminal mastermind of the Chinatown underworld, and Wallace Ford as a wisecracking reporter.
 The film is based on Harry Stephen Keeler's 1928 short story "The Strange Adventure of the Twelve Coins of Confucius" one of three stories in Keeler's book "Sing Sing Nights".
 Despite the name of the title character and being directed by William Nigh, it has no relation to Monogram Pictures later Mr Wong film series.
 The character of Mr. Wong does not appear in the original story.