For more than a century, the accepted history has been that Pat Garrett shot and killed Billy the Kid in 1881. But decades later, rumors began to surface that a man named John Miller, who died in Arizona in 1937, was actually the infamous outlaw living under a new identity. In 2005, investigators opened Miller’s grave and collected DNA samples, hoping to answer a single question: Was John Miller really Billy the Kid? Miller died at the Arizona Pioneers Home in Prescott in 1937, far from Fort Sumner, New Mexico, where Billy the Kid was officially reported killed.
He was buried in the home’s cemetery, and for many years, he remained little more than a name in its records. The unusual part of his story became widely known only after his death. Friends, relatives, and acquaintances began repeating claims that Miller had privately identified himself as Billy the Kid. Unlike Brushy Bill Roberts, the better-known claimant who publicly asked for a pardon, Miller never launched a public campaign around the story.
The official history published by the Arizona Pioneers Home describes his case as “almost a claim about a claim,” because nearly everything comes from people speaking for him after he was gone. Historians cannot question Miller directly or separate his own words from details that may have been added later. The earliest widely cited record connected to this John Miller is a marriage certificate dated August 8, 1881, in Las Vegas, New Mexico Territory. He married a woman named Isidora less than one month after Garrett was said to have killed Billy the Kid at Fort Sumner on July 14.
Supporters of the Miller theory see that timing as one of the strongest parts of the case. A wanted outlaw who had just escaped death would need a new name and a life away from the lawman searching for him. The problem is that a missing earlier record does not automatically prove a secret identity. John Miller was a common name, and frontier records were often incomplete.
Even Miller’s age is uncertain. Some later sources place his birth around 1859, which would fit Billy, while Arizona Pioneers Home records list a birth year of 1850. Those institutional records also said Miller had been adopted by the Kiowa nation after his parents were killed. That background is very different from the known childhood of Henry McCarty, the young man remembered as Billy the Kid.
Billy the Kid was probably born Henry McCarty in New York around 1859. He also used the names Henry Antrim and William H. Bonney. After his mother died in New Mexico in 1874, he became separated from a stable family life and soon entered the legal record for theft.
He later became involved in the Lincoln County War, a conflict that grew from rival business groups, personal grudges, disputed authority, and violence in a county where law enforcement was closely connected to local interests. Billy rode with the Regulators after rancher John Tunstall was killed. He was later charged with serious crimes and convicted for the killing of Sheriff William Brady. In April 1881, while awaiting execution in Lincoln, he escaped from the courthouse jail and killed two deputies.
The escape placed him at the center of a major manhunt. By that summer, Garrett was under pressure to capture him. The familiar claim that Billy killed 21 men, one for every year of his life, came largely from legend and sensational reporting. Modern historical estimates are lower and vary depending on whether killings committed by groups are included.
What is clear is that Billy was famous before his reported death, and newspapers had already turned him into a symbol of the violent frontier. The accepted account says Garrett learned that Billy was staying around Fort Sumner and traveled there with two deputies. Late on July 14, Garrett was speaking with Pete Maxwell inside Maxwell’s home when a man entered the dark room. According to Garrett, he recognized Billy’s voice and fired.
Billy died there and was buried the next day in the old military cemetery. Garrett’s version was later presented in *The Authentic Life of Billy the Kid*, a book produced with journalist Ash Upson and published in 1882. Historians have long treated that book carefully because Garrett had a personal reason to defend his actions and improve his reputation. Still, the death story does not rest on Garrett alone.
A local coroner’s jury examined the body, and contemporary reporting stated that the jury identified the dead man as Billy. Other people in Fort Sumner also saw the body before burial. That is why most historians accept that Garrett killed the correct man. Doubts survived because the shooting happened in darkness, formal records from the period are incomplete, the exact burial location later became uncertain, and Garrett’s account was written by an interested participant.
Those gaps do not prove a cover story, but they gave later claimants enough room to keep the survival legend alive. People who believe Miller was Billy usually point to a collection of similarities rather than one decisive fact. Later descriptions say Miller understood horses, worked as a farmer and horse trainer, spoke Spanish, knew stories connected to New Mexico, and carried old injuries. Supporters also compare photographs of the older Miller with the authenticated tintype of the young outlaw.
Each point sounds meaningful until it is tested on its own. Many cowboys in New Mexico knew horses. Spanish was widely spoken in the region. Scars show that someone lived a difficult life, but they do not identify the person who received them.
Photograph comparison is difficult because Billy’s accepted image shows a young man, while known pictures of Miller were taken decades later. None of these points is worthless, but all of them are circumstantial. They can make Miller seem like a possible candidate without demonstrating that he was Henry McCarty. One reason this case is so difficult to judge is that Miller did not leave a detailed statement that can be independently checked.
Later accounts say he sometimes hinted that he had been Billy the Kid or admitted it privately and then denied it at other times. Other versions say he knew a remarkable amount about Billy’s life but avoided giving a direct answer. The details change depending on who is telling the story. Memories can shift over time, especially when the person at the center of the story is already famous.
A normal comment about knowing Billy, riding with outlaws, or living near events connected to the Lincoln County War can gradually become a statement that the speaker actually was Billy. Miller’s story also became better known only after he could no longer correct anyone. His quiet behavior is one reason believers take him seriously. He did not seek national attention, sell a public confession, or approach a governor demanding recognition.
To supporters, that looks like the caution of a fugitive who successfully escaped the law. To skeptics, it means there is no clear firsthand claim to test. So far, researchers have not found a confirmed record placing John Miller anywhere before his August 1881 marriage. That missing history remains interesting, but an empty space in the records cannot reveal who occupied it.
In May 2005, former Lincoln County Sheriff Tom Sullivan and former Capitan Mayor Steve Sederwall went to the Arizona Pioneers Home cemetery with a team that included forensic specialists. Their goal was to obtain biological material from Miller and compare it with material believed to be connected to Billy the Kid. The excavation quickly became complicated. Miller’s grave was unmarked.
The old coffins had collapsed, and the team encountered remains from two men. The second man was William Hudspeth, a cattleman who had died only days before Miller and had been buried nearby. Because the bones were scattered, the team examined both skeletons and collected samples from both. The investigators had received permission from a former superintendent to open Miller’s grave, but state officials later questioned whether that permission covered removing pieces of bone and whether any permission existed for disturbing Hudspeth’s remains.
The incident led to an investigation and the possibility of legal action. Prosecutors eventually decided not to file charges because the investigators appeared to believe they had authorization. The remains were returned and reburied in August. By then, the John Miller story had moved beyond photographs, rumors, and family memories.
Investigators now had physical samples from the grave. But they still needed something equally important: a reliable DNA sample from Billy the Kid. Reports said samples from the Prescott remains were sent to a laboratory in Dallas. The planned comparison involved traces from an old bench believed to have held Billy’s body after the Fort Sumner shooting.
That sounds like a direct scientific test, but the word “believed” carries most of the weight. Before DNA can identify someone, investigators need a trustworthy reference. A profile from John Miller’s bones can reveal genetic information about the buried man, but it cannot label him as Billy the Kid by itself. The bench would help only if there were strong evidence that biological material on it came from Billy, survived for more than a century, and had not been mixed with DNA from other people.
Old objects can be handled, moved, cleaned, repaired, or exposed to many later sources of contamination. Bones and teeth may preserve mitochondrial DNA, which is inherited through the maternal line and can be useful when ordinary nuclear DNA is badly degraded. Even then, mitochondrial DNA is shared by people from the same maternal family line and does not uniquely name one individual. A strong identification would require comparison with a verified direct sample from Billy, securely identified remains, or a well-documented biological relative.
Without that reference, advanced laboratory work can produce data without producing an answer. Public reports about the testing do not line up perfectly. The Associated Press reported that DNA was obtained from Miller’s remains and sent for comparison with traces from the bench. PBS later noted that no test results had been made public.
Other historical summaries said the planned comparison never fully produced a usable identification. None of these reports provides a published and independently reviewed match between John Miller and Billy the Kid. The dispute later moved into public records cases with researchers seeking documents connected to the investigation. Nothing publicly released established that Miller was Billy or overturned the accepted account of Garrett’s shooting.
A stronger test would begin with verified samples and a clear record of where each sample came from. One possible reference would be Catherine Antrim, Billy’s mother, because a maternal relationship could be examined through mitochondrial DNA. Investigators sought permission to exhume her remains in Silver City, New Mexico, but that effort did not produce the comparison they wanted. Another approach would involve the remains traditionally identified as Billy’s at Fort Sumner, but investigators have faced uncertainty about locating the correct burial and obtaining permission.
Opening a grave in the wrong location could disturb unrelated burials without producing a secure answer. Modern forensic genetic methods can sometimes recover useful information from old bones and badly degraded material. Even so, better technology cannot repair uncertain history. The samples still have to come from the right people.
A verified mismatch between Miller and Billy’s maternal family line could exclude Miller. A compatible mitochondrial profile would show a possible maternal connection, but it would not automatically prove that Miller was Billy, because maternal relatives can share the same profile. A much stronger identification would require several types of evidence agreeing with one another, including genetics, age, historical documents, burial records, and archaeological context. The available public evidence has not produced that combination.
John Miller’s remains provided a real biological sample, but investigators still lacked a confirmed Billy the Kid reference capable of turning that sample into a reliable identity.
