Question: What escaped convict is the novel STrandloper loosely based on?

Context paragraphs:
A Perfect World: A Perfect World is a 1993 crime drama road film directed by Clint Eastwood, and starring Kevin Costner as an escaped convict who befriends a young boy (T.J. Lowther), and ends up embarking on a road trip with the child.  Eastwood co-stars as a Texas Ranger in pursuit of the convict.

William Buckley (convict): William Buckley (178030 January 1856) was an English convict who was transported to Australia, escaped, was given up for dead, and lived in an Aboriginal community for many years.

Ogun prison break: The Ogun prison break was an attack on the Sagamu minimum prison in the southwestern Nigerian city of Ogun State by the prisoners.  The attack occurred on 4 January 2013.  About 20 prisoners escaped from the prison leaving several prison officials and prisoners seriously injured with no death recorded.  About 4 escaped convicts were rearrested by the Armed Squad of the Prison Service.  It was reported that one escaped convict returned to the prison voluntarily to serve out his short sentence

St James' and St Paul's Church, Marton: The Church of St James and St Paul is situated to the south of the village of Marton, Cheshire, England.  It is recorded in the National Heritage List for England as a designated Grade I listed building.  It is an active Anglican parish church in the diocese of Chester, the archdeaconry of Macclesfield and the deanery of Congleton.  Its benefice is combined with those of Holy Trinity, Capesthorne, Christ Church, Eaton, and All Saints, Siddington.  The church is an important location in the novel Strandloper by Alan Garner.

Strandloper (novel): Strandloper is a novel by English writer Alan Garner, published in 1996.  It is loosely based on the story of a Cheshire labourer, William Buckley.  The historical figures of Edward Stanley and John Batman also appear as characters in the novel.

Battle of Aberdeen (Andaman Islands): The Battle of Aberdeen, on the Andaman Islands close to Port Blair, was a war fought on May 14, 1859 (according to Portman but 17 May according to other sources) between the natives of the Andaman islands and the officers and to some extent the convicts of the penal settlement.  There had been skirmishes with the British right from 1857 when the penal settlement was established.  The plan of the impending attack was revealed by Dudhnath Tewari, an escaped convict.  Tewari, convict number 276, had escaped on 6 April 1858 with several other prisoners from Ross Island and had been taken prisoner by the tribals after the others had been killed.  Tewari had then been accepted and allowed to live with the tribals, and even made to marry two tribal girls.  When he heard of the plan to attack the prison colony, Dudhnath returned on 23rd April to inform the superintendent of the penal colony, Dr J.P. Walker of the impending attack.  The natives only armed with bows and arrows, spears and knives while the British army used guns.  Dudhnath had been imprisoned for his desertion and role in the 1857 mutiny and his account has been questioned by some authors.

Deep Valley: Deep Valley is a 1947 drama starring Ida Lupino and Dane Clark, directed by Jean Negulesco and produced and released by Warner Bros. A young woman lives unhappily with her embittered parents in an isolated rural home until an escaped convict changes her dreary existence.  It was based on the novel of the same name by Dan Totheroh.

Richard Craig (adventurer): Richard Craig (1812 – 14 July 1855) was a free settler in the Australian colony of New South Wales, a convicted criminal, an escaped convict, and a pardoned convict who worked as a stockman and drover.

Javert: Javert (] ) is a fictional character, the primary antagonist of Victor Hugo's 1862 novel "Les Misérables".  He was presumably born in 1780 and died on June 7, 1832.  He is a police inspector who becomes, over the course of the novel, obsessed with the pursuit and punishment of the escaped convict Jean Valjean.

Irvin v. Dowd: Irvin v. Dowd, 359 U.S. 394 (1959) , was a United States Supreme Court case.  It involved an escaped convict's (Leslie Irvin) denial of appeal.  The convict sought a federal writ of habeas corpus.

Supporting paragraphs: Strandloper (novel) William Buckley (convict)
Answer: William Buckley