Question: In which region did the settlers have conflict with the Mexican government where it escalated to a rebellion led by John Dunn Hunter?

Context paragraphs:
John Dunn: Jack Dunn, John Dunn, Johnny Dunn, Jon Dunn, Jonathan Dunn or close variants may refer to:

John Dunn Bridge: John Dunn Bridge is located in Arroyo Hondo, New Mexico in north central New Mexico.  It crosses the Rio Grande near the confluence of the Rio Hondo.  It was built in 1908 by John Dunn who transported travelers and mail into Taos and housed travelers overnight at his hotel near the bridge.  It was sold to the Territory of New Mexico in 1912 and at that time the toll-bridge was made a free bridge to travelers.  Recreational opportunities on the rivers include fishing, kayaking, and whitewater rafting.  It is near the Black Rock Hot Springs.

Cocanarup Memorial: The region of Cocanarup is infamous for the killing of many Aboriginal (Noongar) people following the death of John Dunn, whose family had taken out a pastoral lease in the 1870s.  Reports of the incidents vary.  A "Memorial" to the historical incident was opened in May 2015 in the region.  Accounts agree that John Dunn was killed in 1880.  Yandawalla (Yungala) was arrested and charged with the crime.  Dartaban (Dartemera; "Jumbo") was also involved, and was a witness in the trial of Yandawalla (1881).  Yandawalla was acquitted of the murder of John Dunn.  Reprisal killings of a number of Noongar people occurred, seemingly both prior to and following that acquittal.

John Dunn Hunter: John Dunn Hunter (ca. 1796–1827) was a leader of the Fredonian Rebellion.

Battle of Velasco: The Battle of Velasco, fought June 25–26, 1832, was the first true military conflict between Mexico and settlers in Texas.  It began when Texan insurgents attacked Fort Velasco, located in what was then Velasco and what is now the city of Surfside Beach.  The Mexican commander during the conflict, Domingo de Ugartechea, tried to stop the Texans,under John Austin, from transporting a cannon up the Brazos River to attack the city of Anahuac.  The Texian militia eventually prevailed over the Mexicans when Ugartechea surrendered after a two-day battle, once he realized he would not be receiving reinforcements, and his soldiers had run out.  But After Mexico won independence from Spain, it legalized immigration from the United States.  Empresarios were granted contracts to settle immigrants from the United States and Europe in Mexican Texas.  As the number of Anglos living in Texas increased, Mexican authorities began to fear the United States would want to annex Texas.  On April 6, 1830 the Mexican government passed a series of laws restricting immigration from the United States into Texas.  The laws also canceled all unfilled empresario contracts and established customs houses in Texas to enforce the collection of customs duties.  Mexican military officer Juan Davis Bradburn, formerly an American citizen, was appointed commander of a new customs and garrison post on Galveston Bay.  In October 1830 Bradburn established a post atop a 30 ft bluff at the entrance to the Trinity River.  The post became known as Anahuac.

John Dunn (pipemaker): John Dunn (ca. 1764-1820) was a noted pipemaker, or maker of bagpipes.  Born in Newcastle upon Tyne, England, Dunn was a cabinet maker by profession, initially a junior partner with George Brummell.  In the trade directories, he also appears in his own right as a turner (Whitehead 1790) and a plumb maker and turner (Mackenzie & Dent 1811).  His address was Bell's Court, off Pilgrim Street.  He was buried on 6 February 1820 in St. John’s, Newcastle.  His father may have been one John Dunn of Longhorsley; if so, he was born on 3 September 1764.  He should not be confused with one M. Dunn, the maker of several surviving sets of Union pipes.

Cristero War: The Cristero War or Cristero Rebellion (1926–29), also known as La Cristiada ] , was a widespread struggle in many central-western Mexican states against the secularist, anti-Catholic and anti-clerical policies of the Mexican government.  The rebellion was set off by enactment under President Plutarco Elías Calles of a statute to enforce the anti-clerical articles of the Mexican Constitution of 1917 (also known as the Calles Law).  Calles sought to eliminate the power of the Catholic Church and organizations affiliated with it as an institution, and also suppress popular religious celebration in local communities.  The massive, popular rural uprising was tacitly supported by the Church hierarchy and was aided by urban Catholic support.  US Ambassador Dwight W. Morrow brokered negotiations between the Calles government and the Church.  The government made some concessions, the Church withdrew its support for the Cristero fighters and the conflict ended in 1929.  It can be seen as a major event in the struggle between Church and State dating back to the 19th century with the War of Reform, but it can also be interpreted as the last major peasant uprising in Mexico following the end of the military phase of the Mexican Revolution in 1920.

Fredonian Rebellion: The Fredonian Rebellion (December 21, 1826 – January 23, 1827) was the first attempt by Anglo settlers in Texas to secede from Mexico.  The settlers, led by Empresario Haden Edwards, declared independence from Mexican Texas and created the Republic of Fredonia near Nacogdoches.  The short-lived republic encompassed the land the Mexican government had granted to Edwards in 1825 and included areas that had been previously settled.  Edwards's actions soon alienated these established residents, and the increasing hostilities between them and settlers recruited by Edwards led Victor Blanco of the Mexican government to revoke Edwards's contract.

John Dunn Jr.: John Dunn Jnr.  (21 January 1830 – 6 February 1892), the son of John Dunn Snr.  was brought into the flour milling partnership with his father in 1852, he resigned in 1862 to work as a Wesleyan missionary in Fiji but was forced by ophthalmia to return in 1864.  In January 1865 the Sydney Conference removed his right to the title "Reverend", giving health problems as the reason, and against his wishes, and despite a popular petition, he was removed from the Clarendon circuit in 1865.  He was later a lay preacher on the Primitive Methodist circuit.

Qinghai–Tibet War: The Qinghai–Tibet War was a conflict that took place during the Sino-Tibetan War.  A rebellion led by the Dalai Lama with British support wanted to expand the original conflict taking place between the Tibetan Army and Liu Wenhui (Sichuan clique) in Xikang, to attack Qinghai, a region northeast of Tibet.  Using a dispute over a monastery in Yushu in Qinghai as an excuse in 1932, the Tibetan army attacked.  Qinghai Muslim Gen. Ma Bufang overran the Tibetan armies and recaptured several counties in Xikang province.  Shiqu, Dege and other counties were seized from the Tibetans.  The war against the Tibetan army was led by the Muslim General Ma Biao.  The Tibetans were pushed back to the other side of the Jinsha river.  The Qinghai army recaptured counties that had been controlled by the Tibetan army since 1919.  The victory on the part of the Qinghai army threatened the supply lines to Tibetan forces in Garze and Xinlong.  As a result, this part of the Tibetan army was forced to withdraw.  Ma and Liu warned Tibetan officials not to dare cross the Jinsha river again.  By August the Tibetans lost so much territory to Liu Wenhui and Ma Bufang's forces that the Dalai Lama telegraphed the British government of India for assistance.  British pressure led China to declare a cease-fire.  Separate truces were signed by Ma and Liu with the Tibetans in 1933, ending the fighting.  The British had backed up the Tibetans during the war.  After their war the victory over the Tibetans was celebrated by Xikang and Qinghai soldiers.

Supporting paragraphs: John Dunn Hunter Fredonian Rebellion
Answer: Texas