Margrat NcWilliam, a 56-year-old resident of Corsmoire, Rothesay on the Isle of Bute, found herself ensnared in the fervor of the Scottish witch trials during the mid-17th century. The records indicate that by the time of her arrest and trial in 1662, she had already been under suspicion for many years. The grim shadow of accusation fell not only upon her but extended to her family, including her daughter, Katharin Moore, and a grandson, both of whom were also implicated. As per the historical account, allegations against Margrat dated back to 1631, making her purported practice of witchcraft a long-standing suspicion by the time she was formally charged.
The details of Margrat's case reveal a series of recorded confessions, with the earliest being in February 1662. Whether these confessions were given voluntarily or through coercion – a common practice at the time – is not documented, but they constitute significant evidence against her. Margrat faced multiple trials, as indicated by the records T/JO/1882 and T/JO/1887, suggesting a thorough and prolonged examination by the authorities. Her case appears further jeopardized by accusations from a substantial number of locals, with at least thirteen others denouncing her as a witch, which was not unusual given communal pressures and fears. Individuals like John Gely and Elspeth Gray presented their denunciations, possibly fueled by personal grievances or genuine belief in her guilt.
The charges against Margrat NcWilliam extended to accusations of causing property damage, specifically targeting the dairy and crops, critical aspects of rural Scottish life. Such damage not only threatened personal livelihoods but also the broader community’s welfare, adding a layer of tangible social harm to the spiritual and moral fears driving the witch trials. The communal apprehension, amplified by this alleged sabotage, likely bolstered the case against her. Thus, Margrat's plight stands as a poignant snapshot of the intricate and often perilous web of accusations during Scotland's witch-hunting period, exacerbated by longstanding fears and the severe repercussions of societal denunciation.