It has been speculated that the novel was inspired in part by the true story from earlier in the 18th century of James Annesley, heir to five aristocratic titles who was kidnapped at the age of 12 by his uncle Richard and shipped from Dublin to America in 1728.[13] He managed to escape after 13 years and return to reclaim his birthright from his uncle in one of the longest courtroom dramas of its time.[14] Kidnapped does not end in the way Annesley's life story did, as the ship on which the main character was kidnapped never got beyond Scotland, allowing for a rich story of Scotland, highlands and lowlands. Further, a key event in the plot happens when David is present when Colin Roy Campbell falls dead from the unseen murderer’s bullet.
Annesley biographer Ekirch felt in his response to a remark in the review of his book that "It is inconceivable that Stevenson, a voracious reader of legal history, was unfamiliar with the saga of James Annesley, which by the time of Kidnapped's publication in 1886 had already influenced four other 19th-century novels, most famously Sir Walter Scott's Guy Mannering (1815) and Charles Reade's The Wandering Heir (1873)."[13][14] The Scottish author Andro Linklater, who reviewed the book for The Spectator, disagreed with this contention.[15] The author, Robert Louis Stevenson, did not mention the earlier historic event in the novel, nor in his correspondence; instead he names The Trial of James Stewart for the murder of Colin Roy Campbell at Appin as an inspiration, according to his wife.[15]
