Katharine Oswald, a woman of middling status from Nydrie Mylne in Liberton, Edinburgh, found herself at the heart of a complex witchcraft trial in the late autumn of 1629. As the wife of a miller, Katharine would have occupied a respectable position in her community, known for her longstanding reputation, stretching back twelve years. However, her life took a dramatic turn when accusations of maleficium, or harmful magic, were levied against her. These charges included participating in witches' meetings, a claim that only deepened the seriousness of her situation. Katharine's arrest in Nidrie led to her being held in Edinburgh for eight weeks, as the absence of a local tolbooth necessitated her detention elsewhere, delaying the movement of her case significantly.
Despite her husband's efforts to expedite the legal proceedings, it was not until November 11th, 1629, that Katharine stood trial before a specially appointed panel comprising the sheriff, bailies of Edinburgh, and four assessors chosen by the Privy Council. The intricacies of the legal process underscore the gravity with which accusations of witchcraft were handled. In the end, the verdict was guilty, and Katharine was sentenced to execution. Two days later, on November 13th, 1629, she met her fate at Castle Hill, where she was strangled and then burned, the standard method of execution for those found guilty of witchcraft in Scotland at the time.
Katharine's case was not isolated, as it intersected with various other figures identified in similar accusations. Her name emerges alongside those of Alexander Hammiltoun, identified as an accomplice, and Elizabeth Steven and Isobell Young, both denoted as known witches in related testimonies. The breadth of denunciations from diverse locales—such as the Earl of Winton and the bailies of Musselburgh—emphasizes the widespread and detrimental impact that witchcraft allegations could provoke. Alongside personal and social ruin, allegations of property damage to crops, malt, animals, and buildings paint a picture of the tangible disturbances attributed to her supposed maleficium, sealing her fate in the tumultuous landscape of early modern witch trials in Scotland.