In
Walking With Murder: On The Kidnapped Trail (2005), Ian Nimmo examined the mystery of who shot Colin Campbell with the assistance of retired police Detective Inspector Les Liney, who helped by applying modern police methods to the documents, including two post-mortem reports, relating to the case. Ian Nimmo explained, however, "Everyone thought that the bullets came from high on the hillside because of evidence from Mungo Campbell - Colin's nephew - saying that he saw a figure there with a gun going away from him. But the position of the bullets suggests they were fired from lower down, by an assassin on one knee in a nearby depression who could be out of sight in the trees in 10 seconds. We believe that the person on the hill was an observer, who left as soon as the job was done." Furthermore, according to journalist Senay Boztas, "There was one shot but two wounds to Glenure's body because two bullets were loaded into the same gun barrel, the second called a 'wanderer' – () – as it was less accurate. Both exited his body, suggesting they were fired from close range, and from low on the hillside, according to Liney's analysis." According to Nimmo, Alan Stewart did not pull the trigger, and the secret of who did has been handed down in the
oral tradition to at least 20 local descendants of Clan Stewart over more than 250 years. Ian Nimmo chose not to reveal the shooter's name, stating, "it is not mine to give away". In 2001, Amanda Penman, an 89-year-old descendant of the
Clan Chiefs of the
Stewarts of Appin, alleged the murder had been planned by four young Stewart
tacksmen without the sanction of James of the Glens. There was a shooting contest among them and the assassination was committed by the best
marksman among the four, Donald Stewart of Ballachulish. According to the local oral tradition, the actual shooter desperately wanted to turn himself in rather than allow James Stewart to hang and had to be physically held down, on James' orders, to prevent this. It was felt within the Clan that the real killer was not strong enough to withstand a grueling interrogation by Mungo Campbell without also naming his fellow conspirators. Several years after James's execution, when the body was finally returned to Clan Stewart for burial, Donald Stewart of Ballachulish and his family were assigned the duty of washing the bones before the Reformed funeral. Penman's allegations are supported by the local
oral tradition, which has long held that Donald Stewart of Ballachulish, rather than Allan Breck or James of the Glens, was responsible. In
Culloden and the Last Clansman, his 2001 book length biography of James of the Glens and examination of the case, historian
James Hunter also concluded that James Stewart did in fact order the assassination of Colin Roy Campbell. James Stewart acted, according to Hunter, to prevent the imminent mass eviction of Stewart clan members from
Duror and their replacement by Campbell tenants, as well as other large scale estate clearances planned for the very near future. Hunter argued that by ordering the
contract killing of a government estate factor, James Stewart was defending what he saw as the best interests of Clan Stewart of Appin, seeking to preserve as much of the inheritance of his nephew,
Duncan Stewart of Ardsheal, as possible, and following the
code of honour traditionally demanded of a
Scottish clan chief despite fully knowing what the consequences would be. Ironically, according to Hunter, the assassination of Colin Roy Campbell took place at a watershed moment in Scottish history. Many other "Highland gentlemen" were on the verge of abandoning their ancestral code,
Jacobitism and their
heritage language in favour of either emigration to the
American colonies or assimilation into the
upper class found in the rest of the country. The latter choice often involved becoming landlords for profit and, in many cases, ordering large scale clearances of their own clan members and distant relatives. Following James' execution, large scale evictions continued anyway as did voluntary emigration to new communities like Stewartsville,
Scotland County, North Carolina and in other parts of the Highland
Scottish diaspora. '' by
John Singleton Copley. Ownership of the estate was restored to
Duncan Stewart of Ardsheal, James' nephew, who had emigrated to the
Colony of Connecticut, and fought at great personal cost as a
Loyalist during the
American Revolution, in 1785 and the leases of the remaining Campbell tenants were quietly bought out. Large scale estate clearances continued, however, and even escalated due to the high profits promised by large scale
sheep farming. At the same time, Hunter concluded that James Stewart of the Glens, in acting as he was convicted and hanged for having done, "was not acting ignobly." ==Alternative theory==