A memorial near the site once occupied by the gibbet was created by public subscription in 1937. It commemorates over 100 Covenanters who died on the gallows between 1661 and 1688 during the period known as The Killing Time. Their names, where known, are recorded on a nearby plaque. One obdurate prisoner's refusal to escape death by swearing loyalty to the Crown prompted the snide remark by the Duke of Rothes that he had chosen to "glorify God in the Grassmarket".