In the rural community of Nydrie Mylne, near Liberton in Edinburgh, Katharine Oswald, a woman of middling socioeconomic status and the wife of a miller, found her life abruptly upended in 1629 when accusations of witchcraft were levied against her. At the age of 37, Katharine was thrust into a tangled web of legal proceedings characteristic of the witchcraft trials of early modern Scotland. Despite being a known presence in the community for over twelve years, she was suddenly charged with maleficium—harmful magic—and attending witches' meetings, catalyzing a complex legal quagmire that would extend over several months.
Initially arrested in Nidrie, Katharine was transported to Edinburgh due to the absence of a local tolbooth to detain her. For eight weeks, she languished without any advancement in her case, prompting her husband to lodge a formal complaint. This complaint pushed forward the scheduling of her trial to September 22, 1629, with the sheriffs and bailies of Edinburgh appointed as judges. Due to the complexity of the accusations and the legal challenges accompanying such a case, the Privy Council appointed four assessors to assist in the trial, which eventually took place on November 11, 1629.
Throughout the ordeal, Katharine's name surfaced in conjunction with those of reputed witches like Alexander Hammiltoun and Elizabeth Steven, casting a shadow over her tenure in the community. Despite her denial and the supporting council in her defense, the court found her guilty of the charges laid against her. In adherence to the harsh penalties common for such convictions, Katharine was sentenced to be executed by strangulation and burning on Castle Hill, an execution method consistent with the era's grievous punishments for those condemned as witches. Her fate was sealed swiftly, occurring only two days after the verdict, marking a grim chapter in the fervent history of the Scottish witch trials.