In the summer of 1595, the burgh of Ayr served as the site for the judicial proceedings against Marion Greiff. Her trial, recorded on the first of July, culminated in a verdict of guilty, resulting in a sentence of execution. The gravity of the legal process is further reflected in the administrative preparations that followed, which necessitated the mobilization of officials across the region to ensure the proceedings were conducted according to established protocol.
By early December 1595, the final costs associated with the case were settled, providing a stark accounting of the execution. Records indicate that a payment of seven pounds was issued to the messenger responsible for twice summoning the assize from the districts of Kyle, Carrick, and Cunningham to attend the trial. Marion was subsequently put to death by burning. The municipal expenditure accounts detail the specific materials purchased for this event, including coal, cords, tar barrels, and other necessary "graith," or equipment, documenting the grim material conclusion to her case.