question: Who is the author of the book based on the prison established in 1851 in Coburg, Victoria?
answer: Gregory David Roberts
context: Title: Río Piedras State Penitentiary
  Passage: The Río Piedras State Penitentiary, also known as Puerto Rico Island Penitentiary or Oso Blanco (or "White Bear" in English), was a correctional facility located in Río Piedras, Puerto Rico.  The institution opened in 1933 under the government of James R. Beverley, and came to substitute the Puerto Rico Prison established by Spaniards in the 19th century.
  Title: Sukhanovo Prison
  Passage: Sukhanovka, short for Sukhanovskaya osoborezhimnaya tyur'ma (Russian: Сухановская особорежимная тюрьма ) 'Sukhanovo special-regime prison,' was a prison established by the NKVD under N. I. Yezhov in 1938 for "particularly dangerous enemies of the people" on the grounds of the old Ekaterinskaia Pustyn' Monastery near Vidnoye, just south of Moscow.  Known officially as Special Object 110 (Russian: Спецобъект № 110 ), it was said to be worse than the Lubyanka, Lefortovo, or Butyrka prisons in Moscow itself.  Since 1958 it was a jail hospital.  During 1992 the prison was returned to the church as a monastery and on November 17, 1992, the first vows were made within its walls.
  Title: Shantaram (novel)
  Passage: Shantaram is a 2003 novel by Gregory David Roberts, in which a convicted Australian bank robber and heroin addict who escaped from Pentridge Prison flees to India.  The novel is commended by many for its vivid portrayal of tumultuous life in Bombay.
  Title: HM Prison Pentridge
  Passage: Her Majesty's Prison Pentridge was an Australian prison that was first established in 1851 in Coburg, Victoria.  The first prisoners arrived in 1851.  The prison officially closed on 1 May 1997.
citations: Shantaram (novel) HM Prison Pentridge